Rosco Manufacturing - 26,750 Rounds of Full Auto - Barrel Autopsy

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School of the American Rifle

School of the American Rifle

Күн бұрын

Rosco Manufacturing Barrel Autopsy.
This particular Barrel was fired on full Auto for 26,750 rounds.
Barrel exhibited poor accuracy at the 26,000 round count.

Пікірлер: 389
@icelandviking1961
@icelandviking1961 4 жыл бұрын
Learned more about barrels in 17 minutes than 40 some odd years of shooting AR’s. Thank you Subscribed
@donniegombel
@donniegombel Жыл бұрын
Shout out to Rosco's for letting you use their barrel. I will be buying their products from now on. It would have been sweet had they sent you a new barrel with it for comparison. Maybe next time.
@alanmeyers3957
@alanmeyers3957 Ай бұрын
Did you really? What did you learn, exactly?
@boosted95
@boosted95 3 жыл бұрын
Damn at todays ammo price that barrel shot about $18,500 through it.
@user-su4zt7dx7b
@user-su4zt7dx7b 2 жыл бұрын
That’s absolutely insane
@nebick27
@nebick27 Жыл бұрын
Update: at today's prices its closer to $25,000 of ammo
@yeshua1176
@yeshua1176 Жыл бұрын
Actually it's only about 12k worth of ammo and has been for well over a year
@billstevens5277
@billstevens5277 Жыл бұрын
Ya, they got their money's worth out of it. I wouldn't be surprised if Rosco asks to use this video in their advertising.
@alanmeyers3957
@alanmeyers3957 Ай бұрын
@@billstevens5277why? It’s a worn out barrel, what does this prove to you? Olympic arms barrels would go 50,000 +
@realisrealite5554
@realisrealite5554 4 жыл бұрын
I've got a new respect for Rosco barrels.
@gousmc1983
@gousmc1983 4 жыл бұрын
Since I found a local barrel manufacturer I've used Rosco barrels. Also props to them to send off a barrel to a KZfaq gunsmith to critique and show their stuff.... Regardless of outcome.
@jonguy8496
@jonguy8496 4 жыл бұрын
I love watching this guys videos but he makes me want to spend a small fortune buying the stuff he has.
@JohnSoh
@JohnSoh 4 жыл бұрын
A tour of the shop or video about all his equipment and what they do would be fantastic
@SchooloftheAmericanRifle
@SchooloftheAmericanRifle 4 жыл бұрын
I'll do that.
@davidmckenzie4604
@davidmckenzie4604 4 жыл бұрын
Same here!
@madeintexas1213
@madeintexas1213 4 жыл бұрын
@@SchooloftheAmericanRifle hell yeah
@Randy_84
@Randy_84 4 жыл бұрын
Seriously.. all those wonderful toys
@tazerface8659
@tazerface8659 4 жыл бұрын
Nitride is no joke. I've drilled multiple gas blocks for taper pins and my drill press zips right through phosphated gas blocks. With a nitride gas block, I was amazed and perturbed by how hard I had to lean on it before the bit stopped chattering.
@grantpickens2704
@grantpickens2704 3 жыл бұрын
Thank you rossco for the opportunity to see this
@jasonrajabi1191
@jasonrajabi1191 4 жыл бұрын
Chad, with someone of your knowledge, I think it would be great to see an in-depth AR style rifle cleaning video- if you ever find the time. Awesome stuff.
@SchooloftheAmericanRifle
@SchooloftheAmericanRifle 4 жыл бұрын
Certainly
@theduck17
@theduck17 4 жыл бұрын
A live Q&A would be incredible.
@Deathbomb9
@Deathbomb9 4 жыл бұрын
Drop the fieldstripped rifle in a tub of CLP, let stand for 72hrs, remove, scrub parts with nylon brush, run through parts cleaner with very mild solvent/degreaser(simple green), rinse with water, dry thoroughly with pressurized air, lube all parts and lightly coat all steel parts with CLP. We used to do that while on post deployment leave, everything but the optics, and lowers went into the bins, and when we got back you could see carbon settled on the bottom, and it was way more than you thought your rifle had. I currently have an Anderson RF-85 upper. They claim you don't need lubrication, and warn against using lubricant. I run my upper wet, and I keep it wet when at the range and at home I keep a light coat of oil. If I need more than a mag for self defense then I'm not doing it right, or it's the cops at my door, which is a slim to none chance for me. And in reality, you don't need to get every last bit of carbon, and honestly you shouldn't remove it all. It's not worth the time and effort taken to achieve, and in my opinion, it's not healthy for the firearm. Carbon isn't the enemy, your bore, chamber, barrel extension, bolt face, bearing surfaces, and BCG should be clean of build up and excessive carbon. But the first three should be the main focus for being the cleanest and the rest you can get the majority and not have any operational or excess wear issues. The biggest place I see people missing is in the FCG and buffer assembly and tube, as well as their gas tube and gas key. If you have coatings that will withstand it, break/parts cleaner works magic on carbon. I might get chastised for saying that, but I used more of that stuff in the military than I ever did as a mechanic.
@hellcatdave1
@hellcatdave1 3 жыл бұрын
@@Deathbomb9 CLP isn't the best lube. It kind of fights itself.
@Deathbomb9
@Deathbomb9 3 жыл бұрын
@@hellcatdave1 never said it was. It's what we could use in the military and I have used gallons of the stuff. It comes down to preference and how many different products you want to use and have on hand. For most people, they want a few. I have lost count of the number of products I have or have used. For the purposes of cleaning after the range, CLP is great. You can wet the firearm, put it in the case and head home. After a couple hours it has worked it's way in to breakdown most the carbon build up, or if you kept applying it at the range and started with a well lubricated firearm you can likely wipe most the carbon off and have minimal time scraping and all that. For a deep professional cleaning I use several products and in different stages. I've never had an issue with CLP besides its heat resistance and the fact that you have to apply it more often than most oils. But in the military that was t really an issue as we had gallons of the stuff at any point in time and usually did some training with our rifles at least once a month. I've had CLP restore function to an M9 that spent 2 weeks in a humid and damp Texas summer where it was starting to rust and was inoperable. After cleaning and a little scrubbing to clear up the rust it was as good as before. I won't say new because it wasn't, but it was partly due to the basic issue cloth holster that it was stored in.
@supremenanner524
@supremenanner524 Жыл бұрын
Built a handful of my own ARs over the years, learned more from this guy in the past week of watching the videos than I have from any one Ive talked with. From cleaning rifles and reading barrels. Blows my mind how technical this can really get, but its made where anyone can pickup the knowledge. Great work
@chaoticcaninejb
@chaoticcaninejb 4 жыл бұрын
The number one place to get true data and learn right here!
@marcgonzalez9547
@marcgonzalez9547 3 жыл бұрын
I know right & thanks to kotaboy bcg video i ran into chad as i hear people call him he definately earn$ hi$ money talk about a WEALTH of Knowledge plus the Honesty
@andrewtucker7990
@andrewtucker7990 4 жыл бұрын
So basically, there's no way your average shooter would ever need to replace one of these barrels.
@HickLif3
@HickLif3 4 жыл бұрын
Depends on what they consider accuracy issues, there is a place in las vegas that doesn't swap the barrels until they notice tumbling at 15-20 yards with full auto mag dumps. if you are hunting you would probably swap it a lot sooner
@muffemod
@muffemod 4 жыл бұрын
26,000 rounds that's like 26 range visits for me.
@hellcatdave1
@hellcatdave1 3 жыл бұрын
@@muffemod You shoot roughly 780 rounds each range visit?
@Grant881000
@Grant881000 3 жыл бұрын
@@muffemod where are you finding ammo to shoot 1000 rounds per outing
@Kilo__Bravo
@Kilo__Bravo 3 жыл бұрын
muffemod I know right.....
@Randy_84
@Randy_84 4 жыл бұрын
They should pay you for this... Because of your review, I'm looking at buying their product.
@thomasrussell2789
@thomasrussell2789 4 жыл бұрын
This video will probably sell a lot of barrels for them
@SchooloftheAmericanRifle
@SchooloftheAmericanRifle 4 жыл бұрын
I wouldn't take the money because it would mean I can be accused of bias.
@alligatormonday6365
@alligatormonday6365 4 жыл бұрын
@@SchooloftheAmericanRifle we need more folks like you, man.
@bjornegan6421
@bjornegan6421 3 жыл бұрын
why do you think they sent him the barrel...
@user-td1zo3tv9p
@user-td1zo3tv9p 3 жыл бұрын
And THIS, Boys and Girls, is why I run Rosco barrels on ALL of my new AR platform builds. Good on ya, Rosco! Customer for life here. Thanks for the video and proof that I have made good choices in my barrel selections.
@OrignalRecipe92
@OrignalRecipe92 2 жыл бұрын
In short, once your gas port erosion begins to vent excessively and creates a tapered valley in the barrel, it's only a matter of time until the muzzle tolerance begins to open up significantly. Awesome video and thanks for taking the time to share your findings wit us. You've got my subscription.
@christophersine84
@christophersine84 Жыл бұрын
Considering how relatively inexpensive Rosco's barrels are, this is very impressive
@n6mz
@n6mz 3 жыл бұрын
17:10 I haven't seen one of those push-pump solvent jars since I was 17 years old (a LONG time ago) repairing power supplies for NCR mainframe computers. We used them to dispense isopropanol to clean solder flux from circuit boards. As if I didn't LOVE your channel enough already ... thanks for the ear-to-ear flashback smile.
@mtnbound2764
@mtnbound2764 Жыл бұрын
as an avid ar enthusiast, this channel is a gold mine of information! thank you so much for sharing your knowledge.. now if i even had 10% of the gauges you do!
@ddmirolli
@ddmirolli 2 жыл бұрын
I've never been more proud to run Rosco barrels
@twistinprops604
@twistinprops604 4 жыл бұрын
Thank you for posting this. It gives me great confidence and reassurance my rosco 13.7 was a good choice.
@bozobuckets785
@bozobuckets785 4 жыл бұрын
NITRIDE is damn impressive!
@nedflanders5649
@nedflanders5649 2 жыл бұрын
I love these videos. Learning way more about firearms in these short videos than I have in the past 20 years in the military and civilian.
@mach9383
@mach9383 4 жыл бұрын
That’s a dam good testament of Roscommon barrels! Ordered a 12.5 for my next build.
@1nv1c7u5m4n30
@1nv1c7u5m4n30 4 жыл бұрын
How have I gone on this long without knowing about your channel. This is gold. You've earned my interest and a subscriber.
@cfltitan
@cfltitan 4 жыл бұрын
I'm loving these barrel autopsy videos! Keep up the great work!
@michaellengel3727
@michaellengel3727 Жыл бұрын
Having a technical background & being a shooter, I REALLY appreciate the technical reviews. Great job!
@DB.KOOPER
@DB.KOOPER 4 жыл бұрын
It's really interesting to me how the erosion of the gas port occurs towards the _muzzle_ and not the chamber. That's the opposite of what I'd assume would happen. Very educational.
@kentuckyboy541
@kentuckyboy541 3 жыл бұрын
Yeah, me too, but then when you rethink it it makes perfect sense. The gas isn't forced through the port til after the bullet passes the port so it's like back pressure...
@bravomedicalsolutions3862
@bravomedicalsolutions3862 3 жыл бұрын
I believe this occurs as a result of a concept called dwell time.
@seanoneil277
@seanoneil277 3 жыл бұрын
I'd have thought the same because the combustion contaminants arrive at the gas port from the chamber side. But I guess it's because the round drags the plume of contaminants past the gas port and the gas port is a "catch" for the stream of contaminants, eroding the muzzle-side lip of the port.
@me2bfc
@me2bfc 2 жыл бұрын
It’s like driving over a pothole. The first edge of the pothole doesn’t take the impact of your tire but the second does. The gasses are contained until they pass the chamber end of the gas port and flow over it then crash into the muzzle side of the port.
@SKELETOR702
@SKELETOR702 2 жыл бұрын
@@me2bfc perfect analogy
@AtomicCitizen
@AtomicCitizen 4 жыл бұрын
A new favorite! Love the barrel autopsy!
@jamespayne4459
@jamespayne4459 4 жыл бұрын
I subscribed within 2 minutes of the start of your video. I love the straight forward, technical approach and data driven analysis. I hope I'm not casting aspersions when i say it's like watching Chris from Small Arms Solutions from back in the day when he was gaining all the k knowledge he shares now. Excellent content sir, looking forward to perusing the rest of your videos.
@raydon14ify
@raydon14ify 4 жыл бұрын
I wonder what erosion on LMT’s 45 degree gas ports look like
@jonathonschram3429
@jonathonschram3429 4 жыл бұрын
I have been wondering this as well. Some of the claims seem pretty dubious...but I want to see a report from a 3rd party.
@theduck17
@theduck17 4 жыл бұрын
@@jonathonschram3429 Stole this from the AK subreddit because I don't think I can say it any better, but I researched this on AKs and found this to be very informative: "Everything pre-AK-74 used a 45o gas block and gas port. Early AK-74s also used a 45o gas block and port until they realized it was causing bullet shearing. The AK-74 switched to using a 90o gas port and gas block because of this. Everything afterward did, too, simply because it was easier to only have to drill one kind of hole and make one kind of gas block for everything. The gas port angle is what is important. Romania used 45o gas blocks on their AK-74s, but did not experience bullet shear due to the fact the gas port itself in the barrel was drilled at a 90o angle. Basically, it doesn't matter." Also, I believe a 45 degree gas port will lead to quicker gas port erosion...look at how the gas port eroded on this 90 degree gas port...now take that and start with a 45 degree gas block, it's just gonna accelerate the erosion.
@rhyschnee3810
@rhyschnee3810 2 жыл бұрын
Sold me on the quality and craftsmanship of this companies barrels. Thank you, very impressive review.
@seang1032
@seang1032 2 жыл бұрын
This is why I love and prefer Rosco barrels. They come dimpled but you can still pin the gas block if you have a jig or take it to your gunsmith. I currently have about 15k rds through my 10.5 rosco and it only sees solvent, patches and a nylon brush if needed every 1000 rounds. For those that say I should clean it more, it's my training gun and rosco has a decent price when it comes to barrels. I'll buy a new one when it's time.
@eatingelizabethsfrizbee
@eatingelizabethsfrizbee 4 жыл бұрын
This is one of my favorite channels.
@daveh777
@daveh777 6 ай бұрын
That was awesome! I just discovered your channel a couple days ago and I am learning so much! Thanks for these videos. 👍👍👍👍 Merry Christmas!
@lentinikhalsa1
@lentinikhalsa1 4 жыл бұрын
Love that you made this video. I just bought a rosco bloodline 11.5”
@vanderwell07ify
@vanderwell07ify 4 жыл бұрын
I just bought one recently also
@DontTreadOnPeewee
@DontTreadOnPeewee 3 жыл бұрын
@@vanderwell07ify How do you gentlemen like them? I'm about trying to decide on their 11.5 or 12.5 for my next build. Any info would be great
@vanderwell07ify
@vanderwell07ify 3 жыл бұрын
Good to go!
@a2birdcage319
@a2birdcage319 4 жыл бұрын
Please do more barrels ! This is awesome
@BPC556
@BPC556 3 жыл бұрын
I just found this channel and almost immediately subscribed. Very informative and knowledgeable host
@maddmaxx9819
@maddmaxx9819 3 жыл бұрын
I'm feeling REALLY good now about my Rosco barrel that I just bought !
@cbrooks2767
@cbrooks2767 2 жыл бұрын
Wow, that was thorough! I had no idea that many tools/check devices existed. I'm impressed!
@Zaucey
@Zaucey 2 жыл бұрын
This video is the reason I bought rosco for my last build. Absolute best commercial ever
@nonyabiz2777
@nonyabiz2777 3 жыл бұрын
Amazing work thank you. Cant wait to watch your content. Looks like I got a few days of watching.
@uralbob1
@uralbob1 4 жыл бұрын
The gas port erosion is super interesting. It almost mimics running water erosion/undermining in soil.
@seanoneil277
@seanoneil277 3 жыл бұрын
Yep, that trench looks like a water erosion path for sure. Good analogy.
@HiLuxInc
@HiLuxInc 4 жыл бұрын
I felt like I got to know that barrel's life. Keep up the amazingly detailed work!
@nealcleveland4954
@nealcleveland4954 4 жыл бұрын
Excellent review. Good bench practices with your tools too.
@mitchelldelaney5872
@mitchelldelaney5872 2 жыл бұрын
I just wish I had half the quality tools used in your vids!! Great stuff, Just found your channel and it's really great content. Thank you.
@davidunderwood3605
@davidunderwood3605 4 жыл бұрын
Very inlightning insight into the whole world of barrel wear.
@jonathonschram3429
@jonathonschram3429 4 жыл бұрын
Man...my 10.3 ballistic advantage "hansen" barrel was torched at 5,500! Of course, 90% of those were fairly hot Hornady 75bthps behind RL15 or Varget. I wonder how many more rounds it would have survived with an equivalent load of cooler burning ball powder? All academic at this point...ultimately barrels are dirt cheap compared to component prices or -god forbid- factory ammo. Good work on the autopsy! Subbed.
@peterodonohue2482
@peterodonohue2482 3 жыл бұрын
This Channel is freaking amazing. I am from Australia, we arent even allowed AR's here and I love this stuff. Brilliant content, you know your stuff by all accounts. SUBSCRIBED.
@GTFBITK
@GTFBITK 3 жыл бұрын
You should be allowed to own an AR15. Leftist bedwetting is ruining the world.
@pimenjoyer.221
@pimenjoyer.221 2 жыл бұрын
@@GTFBITK Freemen don't ask
@SW990
@SW990 4 жыл бұрын
I wanna thank you for posting your videos.
@crushboss
@crushboss 4 жыл бұрын
Thank you for these very informative videos, learning some great info; hello from Australia!
@creightonleerose582
@creightonleerose582 2 жыл бұрын
Impressive! -Only barrel Ive ever shot out was a S & W CL 16" 5.45x39 that had around 15K as to round count, 70% of that number primarily ComBloc corrosive 7N6-(EXTREMELY well cared for during the rifles firing life-Windex-water wash n' flush minutes after shooting/cooling, then a deep hot-water rinse/scrub, dried, then followed by solvent clean usually no longer than 20 mins after each range trip)-....No S-L-O-W degradation in performance either! -One shot being accurate, the next: Keyhole city, but still hitting a 9" pie plate at 20 yards accurate. Every projo hitting plate sideways.... Picked up an Xtra ROSCO 10.5 pistol barrel, & although its not sitting in anything but a box & un-shot, I'm VERY impressed with just the machining/Surface finish for being a 120$ barrel!...>They are GORGEOUS!< WELL worth the cost IMHO....
@walterhorn5567
@walterhorn5567 Жыл бұрын
I love that your videos are just facts no fluf. please keep up the good work
@play9809
@play9809 2 жыл бұрын
Love your vids man. Sharing a great deal of knowledge.
@scottamy6496
@scottamy6496 3 жыл бұрын
Just picked up a Rosco Manufacturing 12.5" barrel to build a new upper...can't wait to start my attempt at 26,000 rounds
@gregkeen4907
@gregkeen4907 2 жыл бұрын
My bet it that whatever muzzle device that was used was over torque. This is a very common problem. 25 ft/lbs is too much torque. Yet this seems to be the generally accepted consensus. According to Joe Carlos, a precision AR gunsmith, 8 ft/lbs is the most you should ever use on any muzzle device. He's done more testing on these kind of things than anyone else I've heard of. He also suggests using Loctite or Rocksett to keep your device from coming loose. He found in testing that the standard 25 ft/lb. figure constricts the barrel leading to this exact inaccuracy condition. Just my two cents.
@1badpit100
@1badpit100 3 жыл бұрын
Enjoy all of your videos thank you.
@jgt07
@jgt07 8 ай бұрын
Was on the fence about buying a Rosco for my next build. I am no longer on the fence.
@thorwaldjohanson2526
@thorwaldjohanson2526 2 жыл бұрын
I have nothing to do with guns, I am an aerospace and AI engineer, but I love your beautifully machined gages and that little acetone squirty thingy just made me happy somehow 😄
@uralbob1
@uralbob1 3 жыл бұрын
Super interesting and informative. You are a fine teacher. I'm sure your students know how lucky they are!
@18echo
@18echo 2 жыл бұрын
Rosco barrels are the new supplier for the colt new / latest Cr prefix assembly lineup 💪🏼💪🏼💪🏼 milspec/ civilian proof . My 6933 commando , 6920 and my full size 20 in. Rifles all have rosco stamped / proof barrels and they all print 1.5 moa or better at 100 yards depending on ammo quality and weather .
@paulhughes3961
@paulhughes3961 4 жыл бұрын
That's reassuring since I recently finished a build with a Rosco 14.5 .223 Wylde barrel. Haven't had a chance to shoot it yet because if the pandemic.
@brudamiranda3314
@brudamiranda3314 2 жыл бұрын
Great video ! I'm loving the your channel
@Mr_Mojo_Risin
@Mr_Mojo_Risin 3 жыл бұрын
Excellent video. Thank you for the education.
@brazzy1467
@brazzy1467 3 жыл бұрын
I have a 11.5" Rosco barrel and I love it.
@kivaka
@kivaka 4 жыл бұрын
Awesome thanks for sharing your knowledge.
@SETSfirearms
@SETSfirearms 4 жыл бұрын
Rosco barrels are the most underrated barrels, I got an 11 inch on a 2A armament handguard with a basic ass upper receiver, I'm getting better shot groups on my 11in then my 16in
@jakedomshoots
@jakedomshoots 4 жыл бұрын
Need more content Chad these videos are gold. Got a radian and bcm bcg if u need to make videos about em
@Peaktac
@Peaktac 4 жыл бұрын
Send them in for sure
@hodlwise2470
@hodlwise2470 3 жыл бұрын
@@Peaktac how do you go about doing that? There's literally no contact information on the website and he disallows messages on Instagram...
@wil8115
@wil8115 4 жыл бұрын
Rosco barrel added to my list. thanks.
@gunsandcommissions
@gunsandcommissions 4 жыл бұрын
Great stuff Chad
@enluzenment
@enluzenment 4 жыл бұрын
Nothing else matters besides where I can find that thing you have your acetone in. I NEED THAT!
@pdog305301
@pdog305301 2 жыл бұрын
I have one of these 10.5 rosco barrels. At least I know it could go about 26K rounds before being shot out. Another great informational video.
@urbankyng6467
@urbankyng6467 2 жыл бұрын
Unless your doing full auto mag dumps, it'll probably last longer than that on semi auto.
@shawn2763
@shawn2763 3 жыл бұрын
And I'm some how still learning stuff..ty
@shawnmoore8781
@shawnmoore8781 7 ай бұрын
Fascinating, thank you.
@masterxiong7368
@masterxiong7368 2 жыл бұрын
Very impressive. My handgun has over 30k rounds through it but non of my rifles have anything close to that number. Can't wait to see how my rifles will be when they are at those usage.
@dragonusmc0311
@dragonusmc0311 4 жыл бұрын
Thumbs up appreciate the Autopsy videos...….
@exnjcop56
@exnjcop56 3 жыл бұрын
Between this guy and Johnny Glocks, I’am a YT taught Armorer !!!!!
@Pyle81
@Pyle81 3 жыл бұрын
Great 🤦‍♂️🤦‍♂️🤦‍♂️🤦‍♂️🤦‍♂️, Now my OCD has me looking for ALL these wear guages. I love this bore scope. I have one that I never can seem to keep in focus. As for this barrel, 26,750 rounds of full auto. And we don't know what type of ammo they even used during this test. It goes to show you how much abuse this barrel took and how well it held up. Id bet a $1.00 to a Dozen doughnuts they tested this barrel with a can on it. And that probably caused the excessive muzzle end wear at nearly 27-K rounds. Btw, GREAT VIDEO and I'm a new SUB after watching this and several other of your videos. Your NO BS approach to just giving is the facts. And if you do involve your opion you are very admit about telling the viewers that it's just that. And thats something that its getting harder and harder to find today. Especially when you have manufacturers paying for reviews of there products. Especially in the firearms world.
@TheMisanthropeLives
@TheMisanthropeLives 9 ай бұрын
Big fan of Rosco barrels.
@stephenjerome7793
@stephenjerome7793 Жыл бұрын
Lot to learn here, good video
@tonydeaton1967
@tonydeaton1967 Жыл бұрын
Amazing what these little rifles will take when they're set up properly with good quality components. We several older Colt SP-1's that are used as ranch rifles, all with pretty heavy use and high round counts. They just seem to keep going and going.
@sdguy123
@sdguy123 4 жыл бұрын
Rosco apparently makes damn fine barrels!
@welderdude1
@welderdude1 Жыл бұрын
I had 2 Rosco 13.7 mid .223 Wylde barrels with cycling issues so I spent 3x more and got the same sized Noveske but is the cold hammer forged flavor. Since the swap I haven't had any cycling issues. It runs like a clock.
@taylorkelley4498
@taylorkelley4498 2 жыл бұрын
Enjoying the education about barrels :). Started watching because I have a Rosco barrel waiting to be used in a build, got it because it was fairly inexpensive yet they seem to have good reviews but I have still been debating a little in my head if it was a good buy... feeling a lot better about it now! The majority of what I read/hear about Rosco is positive but most of that is just people's experience, it great to see a review/autopsy done with the proper tools. Thanks for educating us! Question about the run out check on a used barrel... would the excessive muzzle erosion negate the runout/concentricity test?
@Frankypunpun
@Frankypunpun 2 ай бұрын
I also am guessing due to it being short and the port pushing gas forward towards muzzle combined as mentioned possible increased back pressure from suppressor or similar muzzle device, that area became the hot bed for wear. Very short dwell time plus inability to expel gas aka back Pressure. Still amazing ability to demonstrate functional cohesiveness of rest of barrel. Impressive.
@rlm2010az
@rlm2010az 11 ай бұрын
Great information
@dazdragon445
@dazdragon445 2 жыл бұрын
Thanks for sharing that..... Very interesting
@frankdindl790
@frankdindl790 2 жыл бұрын
Wish we knew if it had been used with a suppressor or not. Great video.
@americannationalist1110
@americannationalist1110 3 жыл бұрын
I just picked up one of these 10.5” Rosco barrels on sale for $99 bucks. Can’t beat that deal. The gas port size on the barrel I bought says .75 so it’s going to be over gassed but at least it will eat anything I feed it.
@littlejackalo5326
@littlejackalo5326 2 жыл бұрын
0.750" is the gas block size. That is the outside diameter of the barrel where the gas block attaches. It doesn't have anything to do with the size of the gas port or the rifle being over gassed.
@americannationalist1110
@americannationalist1110 2 жыл бұрын
@@littlejackalo5326 you are 100% correct. I got a bit confused but yes that’s correct. One thing I do NOT understand though is why most companies don’t list the actual gas port size? Why is it like some secret spec they don’t want the public knowing lol. I would have liked to know my gas port size.
@themostdopekids
@themostdopekids 4 жыл бұрын
Why do you use nylon brushes over bronze brushes? Does the bronze brush cause any damage or issues to the barrel? Thanks in advance!
@jamesrice6096
@jamesrice6096 4 жыл бұрын
Is the alligator cracking the same as fire cracking? We covered this in school but I only ever saw one good picture with some cracks from another source
@ragnarok5056
@ragnarok5056 4 жыл бұрын
Very cool video, intressting, awsome
@geebeaux
@geebeaux 2 жыл бұрын
Rosco is so underrated. These are $120 barrels, shoot good, last forever. If they had a strong marketing campaign, and some COOL name & logo, these would be $200.
@whiskeyactual.
@whiskeyactual. 4 жыл бұрын
This Garand Thumb's barrel? j/k
@mirrorlake9883
@mirrorlake9883 3 жыл бұрын
that would be more like 260,000
@vonleiningen
@vonleiningen 2 жыл бұрын
Amazing as hell to see this barrel hold up well. Army issue M4A1/Carbines barrels barely survive 13,000 rounds.
@sandymitchell8182
@sandymitchell8182 3 жыл бұрын
Pretty darn impressive
@ArionRaine
@ArionRaine 4 жыл бұрын
I would like to point out one thing you may have overlooked here. With that much erosion at the muzzle, you essentially have a tapered barrel, As your erosion gauge clearly shows. This would potentially render the straightness gauge test irrelevant in this case. This could potentially prevent contact of the gauge rod at the eroded end, where it would normally contact if it were bent with minimal erosion, allowing it to slip through unimpeded. It likely is essentially straight however. Just something to consider.
@WvMnts
@WvMnts 3 жыл бұрын
I want one of these barrels. I’ve never heard of them until now
@kentjones7080
@kentjones7080 Жыл бұрын
Did they shoot that much consecutively or in burst up to a certain temperature/parameter? It would be interesting to know what they’re testing procedures were.
@johnmckinney1493
@johnmckinney1493 4 жыл бұрын
I got a 10.5 in 300acc, love it.
@erikvaldur3334
@erikvaldur3334 3 жыл бұрын
After watching you clean off the loctite from the threads I would love to know if you recommend loctite or not. I saw Brunnels do a video where they pretty much stated not at all. Others have stated in certain spots, etc... I just found your channel, subbed instantly. After only a few videos I have a great deal of respect for you and your knowledge. Also, do you work on arms for the general public? Thanx for the fantastic learn.
@ryanpeck3377
@ryanpeck3377 3 жыл бұрын
Industry standard is Rockset is used on muzzle devices that are not pinned and welded and will (or might) have a suppressor mounted to it.... if its not going to be pinned or have a suppressor then a crush washer is generally used.... rockset is going to hold the flash hider/compensator on even under heat and recoil, that is important with a suppressor as if the muzzle dvce comes loose will firing it can cause the bullet to hit it causing damage or catastrophic failure. Rockset will also allow the muzzle device to be removed in the future if the User wishes to change it out A crush washer could fail with the added weight/stress of a suppressor on it. (13.7” -14.5” barrels will normally have a muzzle device pinned and welded on so it cant be removed and that legally makes the barrel over 16” so it is not considered a Short barrel rifle requiring a tax stamp...or pistol requiring a brace instead of a stock....if the barrel is over 16” or under 13.7” then there is no need to legally pin and weld)
@dstan9615able
@dstan9615able 3 жыл бұрын
Very much appreciate you sharing comprehensive expertise. Just have one question, why the reluctance in using bronze bore brushes? Thank you
@jeffreysidden1832
@jeffreysidden1832 2 жыл бұрын
Chad has said that if you are cleaning a barrel using bronze brushes it can leave a trace of copper, that would then appear as the barrel still being dirty. When I was still in the service, if I used a bronze brush it was with CLP dripped on it and then left to sit to give the CLP 'time' to work before pulling dry patches through.
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