Thanks :)

Thanks!

Tomorrow ,I will get mine 😬👍

Yes, I designed the Long Range pellet barrel for RTI. You can use any pellet but JSB RD and 18 grain work best.

@@gregorkamensek3923 oops , my bad. Congratulations on your accomplishment. I have a feeling your design will be used with competing manufacturers. The information you give us is valuable and much appreciated. My r t I prophet performance in .22 & .177 barrel kit should be in my hands in a week. Only accurate guns are interesting.

:)

Yes, same method applies to slugs. Note that tuning for Prophet 2 and 3 is slightly different due to pressure assisted valve.

As far as I know, the TP and the valve size got enlarged the same time Prophet was released. This is because they are using the same body for both of these guns. But I am not 100% sure...

Hi. RTI would probably answer this better than I, I believe they prepare the guns specially for the countries with 12/lb limitation, so if you buy the gun in UK, it should be already adjusted to this limit. Unforunately, there are no baffels in the shroud :) I am hoping they will introduce this in the future, I have already made this proposition to them a few times...

I am from Slovenia

Generally, if you have higher pressure than needed for a specific pellet speed and you reduce it by lowering hammer spring tension, the air efficiency is better. That does not necessary mean that you will get more shots per fill (it will probably be about the same as with lower pressure) as your available pressure difference (fill pressure - reg. pressure) will be lower as well...

@@gregorkamensek3923 hello if I turn the reg up to much will it go above the uk legal limit ??

Hi. Of course you can use turns but I never paid attention to the revolutions so I do not know how many you need to make for a particular change. In any case, there will be diferences from gun to gun so I think that best is if everyone figures it out for them self.

Hi. The 10m/s is just a guideline and not a strict rule. Test and see what is best for you. This should be valid for shorter barrels as well though, so there should not be and difference other than the max velocity at particular pressure being lower.

The standard regulator does not have any simple was of adjustment, not even on the inside. Basically the only way to adjust it is to add/remove very thin washers (to server as a spacer) to spring washers...

Hello. Older regulators had some problem with creep but the newer ones are much better. There is still some sound occasionally by the regulator after the shot is taken. I did not have any problem with cooking but the gun I use the most is a prototype version. The production version I just started to use (about 2 months ago) and till now, I did not have any issues.

@@gregorkamensek3923 Thanks!

Yes, if you have the one way valve installed (the one that is usually making the squeaking sound when firing the gun), you have to drain the plenum. You can either dry fire or release the air via the bleed screw in the back of the gun.

@@gregorkamensek3923 thanks for the clarification. So unloosing the bleed screw at the back will drain the plenum as well? In that case, I don't have to dry fire.

Can you give me you email?

hello gregori ... here is my email liberatore.roberto69@gmail.com

That is perfectly normal. The reason why the velocity drop is because the hammer spring tension was so big that the hammer opened the valve fully and then still had enough energy to hit the end of the travel limit. If you think about it, when you have correct hammer spring tension, the hammer should not hit the the end and the valve should slow down the hammer and start to accelerate it back. This is a gradual process and takes more time than if the hammer hits the stop and starts to accelerate back. So the valve ended up begin opened for shorter time and you got lower velocities. This would happened on any gun but as you mentioned, others have adjustability limits but if there are limits, you might not be able to set the hammer spring tight enough if you have really high pressure and you want really high power... So RTI deliberately allows you to go over, just so you have a genuinely fully adjustable gun even for high powers. The procedure is as I explained. just find the peak velocity at the pressure you are at (this does not mean that you have to fully screw in the hammer spring tension screw, it just means that you adjust the hammer spring tension until you find the max...) and then you reduce the hammer spring tension until you reach about 30 fps less than was the max.

@@gregorkamensek3923 Thanks for the response, that's exactly what I was doing, finding the maximum while modifying the tension, I was by no mean screwing the spring tension to the max, but what I found challenging was that at some point I saw the speed dropping and I was sure what was the max, maybe I was rotating it too much, I was doing a 1/4 turn, I might need to try again at 1/8 of a turn, anyway I'm really glad you explained because even when I was doing exactly what you described I was not sure why at some point I was experiencing a drop on speed. It all makes now perfect sense! Thanks once more and I hope I can get my hands around that Prophet! Remember one day you told me to wait for it, well I was needing a gun and I pulled the trigger on the Priest2 and I couldn't be happier. I think Nate showed to you some of the 3d Print mods I did to my gun and you wanted to try them in blue, if you still interesting you can contact me personally at orioniguanahunter@gmail.com, thanks once more!

@@OriOnTheIguanaHunter Yes, of course I remember you asking about waiting and also about the accessories. If I remember correctly, they would not fit because I have the extended plenum... I will send you my email...

Yeah, I have problems with accuracy... :(

Yes, it is LW made RPB barrel.

Hm, I don't know...

I doubt it. This gun has 600 mm long barrel which is considered as a "long" barrel. I do not see any need for having longer barrel considering this gun power performance unless it is for some custom slug project...

Not sure I understand the question... I have too many guns in my closet, that is all I can say :)

Unfortunately no, you have to have it in the gun as externally adjustable regulator does not have one way valve so it will dump air out if you unscrew it form a gun. There is maybe a way to put the regulator to 0 bar but I would not advise to use this option...

@@gregorkamensek3923 how is the max setting of the spring in term of turns from flat position? I mean the setting you dont suggest in any case to push it over.

​ @Massimo Piccioni the tipping point (were you go over max. power for the particular pressure with increasing hammer spring) depends on pressure. At lower pressure, you will reach that point sooner and vice versa. This is also why RTI does not limit this adjustment because if they limit if for example for 150 bars, then you would not be able to even reach max. power at 170 bars...

On standard versions, regulators are fixed. You could change the pressure but you would need to add / remove washers in it (I do not recommend if you don't have experience with this yet). If you want to increase power, you will need to make the hammer spring tighter. You can do this by adding some spacer in the back side of the spring, but it is not as elegant for fine tuning as the adjustable but pad form RTI.

@@gregorkamensek3923 Thanks Gregor, I appreciate your kind answer. Have another couple of questions to your knowledge as I own the priest 2 in .25 (with also the 22 conversion) but I'm not able to unscrew the aluminum bottle. It's hard like hell. Since I don't want to damage the gun, I let it on but noticed that the bottle itself moved and pivoted towards the barrel. I just pushed it away as it was but I don't think it's normal. Do you have any tips for this issue? Thanks alot again. I'm from Italy.

@@thejack01 It is quite hard to unscrew the bottle while under pressure and also, not all RTI guns use one way valve... So it you do not know if you have it, I would not advise it. As for the moving of the bottle, the thread on the regulator (that is threaded in the gun) in quite big and it is never fully screwed in so you can have the pressure gauges on the appropriate position. The pressure is what is holding the bottle in a specific position, so it can have some flex. This is normal.

I don't know...

Stewart Gash I’ve emailed RTI with that question. Their answer was vague at best. Maybe yes maybe no.

Hi. For pellets, what you need is the "5,5 LR" barrel. This is the RTI barrel dedicated for pellets. It is made by LW by RTI specs. With that barrel, you can shoot JSB Monster Redesigned at 310, 320 m/s and still get stable long range performance. I am shooting a 2,5 cm circle at over 100 meters and I get a hit probability of about 90%. I have a video about this barrel. But this barrel will not shoot slug well. I would recommend getting the long (Prophet) version - 60 cm. You will also need the pressure set to about 170-180 bars and hammer spring adjusted. BTW: do you still have the old body (back side)? Old body has slightly smaller ports so you might not get full 320 m/s power but rather about 300 m/s... This is by far the most accurate setup I have tested. No other gun that I have tested was ever more accurate. For slugs, it is a different story. To tell you the trough, I haven't yet find a barrel and slugs that would outperform pellets at close range. And for long range, I also haven't find any barrel / slugs that would outperform JSB Monster redesign in long range barrel. I am constantly trying to get good performance with different slugs but I am not satisfied with the results. The problem is that the slugs that are now available are reverse engineered to shoot in pellet barrel that are not designed for this. So the results are acceptable but not really good. What needs to be done (and already has been done by FX but is very limited to use in FX guns and also has its own problems) is design a barrel for the slugs that are on the market... So far, I do not have any really good solution for you. Simply having higher twist rate will not bring better results, it needs to be designed form ground up to slugs...

@@gregorkamensek3923 Hi Gregor, my configuration have all actual parts of RTI, front and backside new body, the new side lever, the moa rail, the back plate and the new regulator. The power plenum i will produce with my machinery. Because i will integrate a second gauge on left side into the plenum tube. Also i will build a adjustable spindle at the back plate to hold the aiming point. Therefore it was also necessary to have a longer side lever. Now i do not loose the target point in my scope, because now it is so smooth to cock the hammer spring. At adistance of 20m , 135 bar, 800 ft/s , and using JBS Heavy Monster redesign i bring 12 shots into a circle 15 mm diameter. ( baffles in the shroud ans a moderator ) Absolutely silent, the noise of the hammer and the plinking at the pellet chaser are louder than the expanding air at the muzzle. I think i will follow your advice and order the new lr barrel with the new shroud. Best Regards, Harry

@@haraldschweiger2086 Yes, the long range barrel is really excellent for pellets. Also try to get the "good" Monsters Redesign. There are different batches and you should get the ones that have shallow hole in the skirt...

@@gregorkamensek3923 Hi Gregor, now i have produced my power plenum with gauge on the left side. I´m shooting with 160 bar, 980 ft/s and about 74 j with monsters redesign. 20 meters, 12 pellets, 12 mm circle. Best thanks for your advice, If you give me your email, i will send you some pictures. Best Regards, Harry

@@haraldschweiger2086 Hello. I am happy to hear that. I don't like to share my email on chat massages, but I am happy to reply if you either send me a private massage or if you give me your email.

If you are taking about .25 ACP slugs, the answer is yes.

@@gregorkamensek3923 .25 ACP slugs ? I was talking about the roundnose boat tail slug mold you designed. Have you done any testing ? Hope to see your video on this soon. Tq.

@@brokenarrow61 Ah, OK. Yes those fit in the magazine but I do not recommend them for Prophet or and other PCP that pushes the slug in the barrel... They are quite large. If you size them, then it is OK. I am working (with MP molds) to have a mold for modified .25 ACP slugs for airguns. Those would be hollow point and slightly lighter. 48 grain is a bit much for Prophet and even more for most other guns...

Yes, if you have the Performance version.

Unfortunately, I will not be of much help here as we are not allowed to use suppressors in Slovenia :(

@@gregorkamensek3923 Well that is exactly the reason I am asking... Do you have any other solutions or ideas, than a silencer. Reason for asking is that my friends FX Impact Mk2 is much quieter dan the Prophet, even without a silencer. So I thought maybe they use a better material for the shroud in the FX?

@@ronaldkonings8117 Slovenia (where the gun is produced) has restriction about this (as I mentioned) but I am trying to convince them to put more effort into this for the international market so I am hoping they will work on this.

But yes, the Priest does not have any baffles to dampen the sound and the shroud is not much longer than the barrel...

Zdravo. Lahko mi daš tel. ali mail, ampak trenutno nisem v slo, tako da na telefon ne bom dosegljiv še cca 14 dni.

Accu-tac

You can adjust the 1st stage of the trigger to be longer by threading out the connecting rod of the trigger a bit. I assume that the safety does not work because you reach the 2nd stage of the trigger before the safety limits triggers travel

You are talking about the hammer being loud? I haven't notice it being any louder than any other gun...

Probably not, I believe they limit the power by TP so the hammer spring is probably already at the optimum position for the pressure...

@@gregorkamensek3923 shot it the first time today, very impressed with how quiet it is fitted with a Donny fl Tanto mod it, very pleased with my purchase.

I am assuming you have the newer adjustable trigger. you have 2 screws (allen 1,5 mm I believe). The rear screw adjusts sear engagement, if you want to set it for short second stage you have to turn it clockwise. The front one sets the spring (weight) of the second stage. To have it lighter, you have to rotate it clockwise. Note that if you have the front screw too far out (ant clockwise), the sear will not engage because there will be no spring tension to return it so rear screw will have no effect either and you will not be able to cock the hammer. Same goes for the rear screw, if you rotate too much in (clockwise), the sear will not be able to catch anymore and you will not be able to cock the gun. I would suggest that you have the front screw somewhat screwed in in the beginning, then tune the rear screw to have short but still safe coking (when you cock the gun, you should be able to hit the gun with your hand in any direction without it going off), then you make the second stage lighter with front screw and follow the same safety procedure. I usually do it the following way. I have the front screw in about half way, then i cock the gun (make sure there is no pellet in the gun), then start to turn in the rear screw (clockwise) slowly until the gun fires. Then go back (anticlockwise) about 1/2 revolution. After that adjust front screw (weight) to your liking...

@@gregorkamensek3923 excellent reply Gregor !! Much appreciated , I just wanted a lighter pull , wasn't too fussed about how long the first stage was but as you say I couldnt cock the gun, this was worse when it was filled above 230 bar , so after a bit of degassing it was working ok but not set up as i wanted it . So still tweaking to get it right .

Yes, this procedure is good for all conventional valve adjustable PCP rifles including Prophet and The Priest II. Prophet II on the other hand uses pressure assisted valve and on that valve the procedure is slightly different, basically all you have to do is to adjust the pressure the results in desired velocity.

@@gregorkamensek3923 To clarify, if I lower the pressure down to shoot lighter pellets, I don't need to adjust the hammer spring on Prophet II?

@@EdBraunbeck The answer is: no, you do not need to adjust the hammer spring. Prophet 2 has pressure assisted valve. For this valve, you only need to adjust the hammer spring once at the highest pressure you ever intend to shoot. After that, you adjust the pellet/slug velocity only with pressure.

First of all, not to make anyone angry, I said that it is the most accurate gun I ever used / owned :) But yes, it is the barrel along with adjustability. There is quite a few pellet guns that achieves this at closer range , but when you get to 100 + yards, they loose the accuracy. Plus given the fact that you can shoot pellets at extremely high velocity at longer ranges, it makes it less sensitive to wind as conventional pellet guns shooting at conventional speeds (up to 900 fps). I will have some videos soon shooting 2,5 cm target at 102 m (111 yards) soon...

I don't have any other answer for you than: RTI or better yet distributor...

Not in this design of the regulator. Many regulator do require the air to be drained out or at lease lowered below working pressure. If RTI ever comes out with such design, you can be sure that I will state this very clearly in the video.

Are you sure it is form the hammer? I would assume it is either form the screw that holds the barrel or pellet pusher or even around the barrel. Anyway, if it is form the barrel then you need to replace the o-rings on the barrel, same with pellet pusher. It is normal to have some air escape form the screw, but if it bothers you, you can use some blue thread lock, just put it on the screw and screw it in...

@@gregorkamensek3923 yes air comes out of the hammer area ,just below the pellet probe. I tested the barrel and pellet probe and there is no air at all. But as you just helped me now,RTI members told it is natural as you said. But I set my pressure at 140 bars ,when I shoot , it comes down to 130 bar and it seems to stay there during shooting which means I need to compensate that and raise it to 150 bars ,in this way ,I can get to 140 bar,what do you think ? Is this natural too?

Iam interested to show you my group here it is ,have a look pleaseinstagram.com/p/CEnyoGPhkpn/?igshid=1bnrup0kw6tsl

​@@weirhauch1002 it is normal, yet. After setting the pressure by regulator screw, you need to take a few shots and then repeat adjustment if the pressure is not as you desired. It is quite topical that the pressure goes up too much and then settles down when you make a few shots.

@@gregorkamensek3923 thank you qnd I hope you loved the group I put above this comment.😁😁👍

You should ask RTI about that.

Depends on what you mean by better... but general answer would be NO. Also, this is not possible with pressure assisted valves. The only reason why it would be better is because of air consumption and in some cases, it can give better accuracy because there is less pressure behind the pellet once it leaves the barrel. But there are a lot of problems with this setups such as velocity inconsistency, requires much higher regulator precision, you have to top up the gun sooner,... So it is always best to be close to what the pressure enables - just under the max velocity.

@@gregorkamensek3923 hi i am still quite new to pcp. I bought a .177 pistol/carbine with 10.6 inch barrel unregulated shooting 8.7gr @ 720-740 fps out of the box. I wanted to buy a regulater being sold to install. There is no pressure gauge on it and i have to request them what pressure i want it set. It is then installed on to the air cylinder looking like a few inch cylinder extension. would like to shoot 9.56gr at about 840-860fps. The regulator comes with a 33cc plenum. The settings can be between 90 to 150 bars as per request.

@@Lucas-ix8bgI assume we are not talking about RTI gun here so I will not be able to help. I could only help you if I knew the gun you have in extreme details which I do not (and I will not even if you tell me a model and brand)... Also, you are requesting higher velocity with higher pellet weight once regulated. That might not be possible and even if possible, it will reduce shot count significantly.

@@gregorkamensek3923 yes i have realised that the pcps are complicated machines even though the mechanism looks simple. Thanks for taking your time to respond. GBU

I have just done a fast test with 68 grain slugs from ZAN and I got 250 m/s at around 180 bars (that is just over 100 fpe)

@@gregorkamensek3923 Hello Gregor, Some great tuning that is, reaching 250 ms wit 68 grain. With reg at 180 bars using the ZAN 49 grains it reached 256 ms (priest 2 performance version). With ZAN 45.5 grains it reached 265 ms. Nielsen slugs performed the same. At 180 bar springtension is set at about 9mm. My question how did you tune it to shoot that fast with 68 grains, are the ports different on the priest2 vs prophet? Or do I need another spring or something? Thanks in advance

Or are those results with prophet2?

@@JV-rg1udPriest2 should be the same as Prophet. Aside form pressure, weight of the hammer play a big role and hammer spring tension of course.

@@gregorkamensek3923 Hi Gregor, thanks for the reply. I just ordered the prophet performance spring. I was thinking of also ordering the prophet hammer, but i wasn't sure if the hammer that came with the .30 cal priest2 isn't already that hammer. It looks the same, as far as weight concerns i'm not sure. Do you have a suggestion on which way to go with the hammer? Thanks.

If it works, it should be OK. RTI had used few different options regarding spring so it is possible that mine was different. Regarding velocity it is also OK. My suggestions are a guide but there can be some differences form gun to gun. The important is that you get the correct power and accuracy.

That my friend you will have to do yourself :)

L,p

@@gregorkamensek3923 l,p

, ,,p,p.pppp,p,

,p

Sorry but I don't speak Spanish :(

Si por favor 🙏 no se entiende nada

hello Gregorio bought a Prophet Cal 5.5 ... I'm Italian I saw your video where you explain many important things about the Prophet. as I don't understand your language I ask you very kindly if you could give me some advice and explain how I can best use this rifle. .. that is how can I bring it to the power of 80 jaul? fit a loterwalter rod? do you think you advise me to put the pressure regulator? and apart from the loading lever, what difference is there with the Priest 2? give me more tips to shoot with this high performance rifle ... thanks roberto

That is also an option of course. But I would still suggest shooting as the bleed screw is not intended to be retighten under pressure and it might destroy the o-ring and start to leak after a while.

@@gregorkamensek3923 that i didnt thinked about ... good to know about this "risk", thanx

You can of course. You can use slugs in all RTI guns. The only thing that RTI is saying that RTI Long Range pellet barrel is designed for pellets. I have report of some people that the get good results using pellets even in those barrels. All other barrels in RTI guns are conventional airgun barrels so they should shoot slugs reasonable well.

Sorry, typo: I have report of some people that the get good results using SLUGS even in those barrels. :)

@@gregorkamensek3923 🙏💓

@@sohospice2731 With the 5.5mm .22 long-range barrel I am getting acceptable grouping at 40m with lighter around 25gr h&n and patriot.

@@riaandewinnaar5040 🎄🤝🙏

Not sure what you mean, do you mean hammer spring adjustment? This is described in this video.

@@gregorkamensek3923 to see how to change the parts

Yes, it is the same but you do have somewhat smaller transfer port so you will not get as high power as with mk2 or the latest Prophet...

@@gregorkamensek3923 what can i do apart from drilling it out to the same as the Mk2 / Prophet

@@edgarmaynard5835 Maybe I can suggest you to purchase only the body of Prophet / Priest... You can also increase the pressure, hammer weight and hammer spring, but you will always have the air flow as a limiting factor...

@@gregorkamensek3923 thanks for the update i will have a think about it . I got the Mk1 back on song it was the sound mod that was the problem with accuracy

@@gregorkamensek3923 Dober večer. Imam Priest2 z regulatorjem tlaka in nastavljivo vzmetjo na zalogi. kaj bi zaslužil, če bi zamenjal vzmet s težjim in težjim kladivom? Hvala vam. Imej lep večer.

If the valve does not leak, then I don't see any reason that there is something wrong with it. Did you notice any anomalies? Is the power not appropriate in relation to the reg. pressure?

yes, the truth is that I think I have to get used to how the rifle works, it is because I have never had one with a plenum box and regular power at this level, what I have doubts about is only when the air passes through the plenum box, sometimes it takes longer to pass air towards it, I have noticed it when under power for example at 90 bar it takes longer and when I go up to 130 or 150 bar it is nothing that takes time to fill the plenum, that is it, on the page it says that it only takes 1ms but it is not the same When lowering the power I don't know if I'm doing something wrong.

@@charlesronaldfontealbasagr1826 It is normal that the plenum fills back up quicker at higher pressure but it never fills up during the fire cycle so this does not affect the valve operation in any way. Also, at lower pressures, the valve is opened for longer time so it drains the plenum slightly more, that is also partially the reason why the plenum fills up slower... The 1ms you saw on the web page is referring to the valve opening time and has nothing to do with plenum refilling time... Just a side note: slower regulators (longer refiling of the plenum) is better in terms of pressure accuracy as during refilling, there is also thermodynamics transient phenomenon to be taken into account. Anyway, I assume that your valve operates exactly as it is supposed to...

@@gregorkamensek3923 ok, thank you very much for helping me on this issue, now I am calmer that the rifle is working normally and that it is fine.

@@charlesronaldfontealbasagr1826 👍

Problem solved, a new regulator. 150 bar, hammertension 7,5 mm jsb monster @300m/sec.

@@fuselman91 como dices que el regulador lo reemplazaste por otro nuevo, que le ocurrió al anterior ?

@@charlesronaldfontealbasagr1826 English?

@@fuselman91 You say that you replaced the regulator with a new one, that's what I understood, what happened to the previous one, sorry, my English.

The dealer could not repair the regulator so he send to RTI and got a new one. Was warranty .

Yes

@@gregorkamensek3923 как? и какая цена?