Thanks for watching!

Thanks Paul!

Thanks

Gary Larson already made a video about that method a few weeks ago. Works well.

@@PrecisionRifleNetwork What video is that?

How do you calculate your constant

Could You link the podcast Please?

Crybaby Blues I can’t argue with a math guy. Not that I don’t “want” to. I simply can’t. lol I got my constant for that gun and ammo from a DMR class I took with The Site. Jim Kauber is an ex Seal Sniper. I’m not saying you’re wrong or that he’s infallible, just that he knows more than me and I’ll take his word for it. lol

Jim can be 10x better than me and still make a small mathematical error. lol Not being argumentative, just trying to fix one of your variables. We know its not a constant, because the number shrinks continuously with increase in distance. So we choose a midway point (constant) for practicality. You reverse the math in your Ballistics charts using your wind formula, ie: 7x5=35/2.5moa=14......7x5=35/1.96moa=17.85...etc, to get your "constant". IF you input your Ballistics chart wind drift data adjusting for a 1 mph wind. No ego homie, just tossing ya a tidbit. It will also help you find your constant at any distance you want. Its just reversing the math is all. My hornady 4dof says .28moa at 1mph at 500 yards. 7mph is .28x7=1.96. So 7x5=35/1.96=17.85. I round to 18. Even if yours varies slightly based on your location, temp, barrel length, powder-load, etc it won't be but a few hundredths of moa. A constant of 14 is entering into .308 territory. And we know 6.5 creedmoor smokes .308 in wind deflection.

Crybaby Blues thanks, but you lost me. #mathishard

@@PrecisionRifleNetwork The math is easy, explaining math is hard lol. I edited the last comment. Trust me, man, use 18. You'll tighten your wind holds I promise. 6.5 creedmoor deserves it. Distance x Wind then divide by your windcall (moa) and you'll get your constant.

@@cmhwilder Thanks

Yea, he just pulls that magic number 14 out of his ass

Hudson as I said in the description, google search for wind constants. You should easily find a bunch of articles and charts. The reason I worded it like that is because some people say the constant changes based on some variables and some people say you use one constant for everything. I was trying to acknowledge that. I personally just use 14 for everything because #1, I don’t need a wind constant at all below 300 yards. And #2, from 400-1000 my constant works fine. It might and possibly should change beyond 1000y but I never shoot that far.

Theres an old wwii rifle training video that describes guessing wind speed and determining wind holds. The formula for the hold was (A*B)/10= number of windage clicks, where A equals the range in hundreds of yards (ie 500 yards=5, 1000 yards= 10, ect) and B is the wind speed in mph. This essentially gives you the wind hold in moa as the windage knob on garands is 1 moa clicks. I believe that the 10 is the constant for m2 ball ammo

Actually there’s a way better method for figuring wind now. This video is a few years old. New way dopes gravity which is a constant no matter what caliber you choose. Bullet constants were bullet specific…no longer the best way. Here’s a link to an article - www.snipershide.com/precision-rifle/the-modern-wind-rose/

You’re welcome

Here you go, maybe this will help. alphamunitions.com/wind-calculator/

that's so you can change it into Mils from MOA

Ok so will it always be .3 ?

Your constant for a .308 is 12 or 13. Again, this is just a rough estimate, but it should get you pretty close.

@@PrecisionRifleNetwork thank you sir.

Sir, Thank you very much for your answer, and I have another question : that is if I find some informations of a bullet in their official site , for instance the BC of 6.5 creedmoor of Hornady or BC of 300 WM of RWS, it's possible calculate the wind drift by this BC value, if not which information is useful for calculate the wind drift?

@@zfzhao2562 yes, it's possible to estimate a wind hold based on a bullet BC. You should go to Sniper's Hide forum and search for "weaponized math". The posts there about this topic will be most helpful for you.

@@PrecisionRifleNetwork I am very grateful for your help, Sir.

Ketema Harris I replied to above comment. Go read that one. 👍🏻

It’s a formula based on distance and wind speed, but it changes based on caliber too. Here’s a video about it. kzfaq.info/get/bejne/ppZiabxhvLvdZoU.htmlsi=wVFm-4Di0J8QVPfl

I explained that and showed it. about the 2:50 mark.

@@PrecisionRifleNetwork what you explained with the addition of arrows was that you multiply by .75 for a wind that appears to quartering towards you. Do I still use .75 if the wind is quartering away from you?

My bad. I just read the other comments about wind constant. Sorry.

For those interested in the wind constant read from "An Old Marine Corps Method" on this link: www.millettsights.com/resources/shooting-tips/mathematics-for-precision-shooters/

At 600 Yards, Divide by 14 At 700 and 800 Yards, Divide by 13 At 900 Yards, Divide by 12 At 1000 Yards, Divide by 11

ynotjf The wind constant for most 6.5’s It’s not perfect, but it’s close. It’s just “try dope” after all.

John Floyd how can I help John?

Precision Rifle Network Too many factors for me to process. I guess I'll buy a Kestrel. Thanks

@@johnfloyd7132 and lots of batts

Are you familiar with the Sniper’s Hide forum?

@@PrecisionRifleNetwork No I am not. do I just type that into a search engine? I am also interested in knowing what FM's cover these things.

@@oldmanpatriot1490 definitely get on sniper’s hide and search that forum. It’s probably the most comprehensive source of info on precision shooting anywhere.

Tibersaurous Rex on KZfaq has the hands down best long range videos on the internet. He’s got a LONG ass series. Each video is like a subsequent class that. It starts a little basic with things like cartridge selection but also goes very in depth with ballistics and calcs. Bring some popcorn and pad and paper and enjoy the process.

@@ssgslaughter4639 Thanks, But even T-Rex doesnt go in depth into the calculations that brings it all home without a ballistics calculator. If you watch his videos closely,, you will see a kestrel in his videos... To the untrained eye,, T-Rex comes off as the know all be all.. Although he is very good at long range shooting and knows his crap,,,, he still needs a ballistics calculator like the rest of us.. Since this comment,, I have purchased the Kestrel 5700 sportsman. the kestrel is powered by a AA battery, so I bought the goal zero nomad 7 in case I need to recharge. And for a back up,, In case all else fails,, Another good man turned me onto a analog calculator called the Accuracy 1st whiz wheel.. Really awesome company.. You call them and give them detailed information about your rifle, cartridge and scope over bore and they custom make a whiz wheel for each weapon system you have. So if you are looking for light weight state of the art system that affords you to stay out on mission for extended periods of time,, and a analog calculator to back up electronics,,, this is what I have done.. Check of them out... I know this isnt cheap and isnt for everyone but with all of them combined, I am well equipped for any mission that may come my way given the state of affairs we find ourselves in..

i agree. It's just another option.