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  1. K

    Ar's that won't function

    My vote is a weird gas issue. Maybe a gas tube with a hole drilled in the wrong spot. a gas tube that is misaligned to the gas key. I had one rifle where the gas key wore down the gas tube severly and would not provide enough gas to operate. Gas key hole maybe too large. Double check...
  2. K

    6 Creedmoor AR10 building now just random questions.

    For gas block adjustment, start with it closed and open it up little by little until it just holds the bolt open on an empty mag. If you shoot in varying conditions a lot, maybe a few clicks passed that. With 6cm and a can, youll have a ton of gas so it might only be a few clicks passed closed...
  3. K

    Is bedding the AR barrel a myth? What's the best way?

    Id have to do the math again, but my memory is telling me a deltaT of 200F gave a increase in dia of .004. Just google up the expansion coefficient of Al and the equation for expansion of a pipe and itll give you a good estimate. Aim for .004 to .005in for your barrel to slide in easy. I...
  4. K

    Is bedding the AR barrel a myth? What's the best way?

    I shim and thermal fit both large and small frame enhanced upppers. Its more of a pain, but its doable. I always measure the bore dia and the extension dia though, so i dont have to guess and check for the shim stock thickness. For people asking about how to heat. Ive used to do them in the...
  5. K

    Is bedding the AR barrel a myth? What's the best way?

    Blue loctite. There are probably better choices, but it has worked for me and is always sitting on the bench. Make sure to check the OD for consistency after it dries so you dont get jammed up when putting the barrel in.
  6. K

    Is bedding the AR barrel a myth? What's the best way?

    That's not how i do mine. Ill measure the bore and the OD of the extension. pick a piece of shim stock for the desired fit. Cut the shim stock so it can wrap around the extension with a t gap where the ends would meet and so that it doesnt get in the way of the feed ramps. Then ill glue the...
  7. K

    Is bedding the AR barrel a myth? What's the best way?

    I like to build all mine with an interference fit between the upper and the barrel. Either with an undersized upper, or by shimming the barrel to the upper. I aim for .0005-.0010in of total interference. Ive never personally tried the green locktite method, but it seems to work well for guys...
  8. K

    I bet this has never happened to you

    40grs of 4350 for 88s or 85.5s was too hot for my 22cm gasser. H4350 i felt was not a good fit in general for heavy bullets. I moved h4831sc and got the best results. With my 24in +2 x-caliber barrel, anything above 3100fps seemed too hot, regardless of what powder i tried. I promise though...
  9. K

    Wilson Arms 16" and 20" AR15 Barrel Testing

    I love the larue triggers, its my default trigger for a new rifle. But for my precision rifles ive really been enjoying the triggertech 2 stage diamond.
  10. K

    Which 6mm for gas PRS?

    Agreed. I dont hear anyone complaining about there 6.5 gassers here. Mcgowen is now even offering cut rifled 6.5 barrels, id like to give one of those a try.
  11. K

    Which 6mm for gas PRS?

    My 22cm fed really well and was surprisingly reliable. I picked too fast of a twist rate though and was blowing up bullets for a while. 2 guys local to me, who are very high level shooters, both have had really good results with 6gt large frame guns. 2 other guys that also shoot at my club...
  12. K

    Which 6mm for gas PRS?

    6 creed, 6x47 and 6 gt are the only choices in my book. 6 arc just doesnt have the horse power. I was getting 2550 with 108 elds and varget and a 24in barrel. Sure you can run cfe or something else, but its way easier, the brass options are better if you move to a large frame. The only real...
  13. K

    Wilson Arms 16" and 20" AR15 Barrel Testing

    Ill be excited to see your results also. My buddy has a wilson arms barrel in a different profile that also shoots really well with a lot of different bullets. Do you get good performance from your 73s at mag length? I was a hoping for more out of the RMRs, but honestly for the matches i...
  14. K

    Wilson Arms 16" and 20" AR15 Barrel Testing

    Best five shot groups of some various bullets ive tried. Doesnt alway do this, but this barrel does seem to be more consistent on average then other barrels i have. My 73eld load is always under .75in at 100yds The 69rmrs have never been under 1in at 100yds, but never over 1.5in It seems to...
  15. K

    Wilson Arms 16" and 20" AR15 Barrel Testing

    I have one of these $99 16in bull barrels. Mine is hammer. It seems to shoot all bullets to their full potential. Ie if this barrel wont shoot the bullets, then none of my other gas guns even have a chance. My barrel was over sized after the extension and required the ID of the barrel nut...
  16. K

    Precisions ar upper? Build help….

    My current PRS gas gun is built on an M5 enhanced upper. It is good quality and the rifle is very accurate, but I would agree that lately Aero quality has gone down. Both me and a buddy recently had an issue there the face of the receiver was not flat. My buddies was an M5 enchanced and mine...
  17. K

    Effectiveness with ar10 and 15

    My personal experience and observations shows that for target sizes 1mil or larger, gassers can be faster by many users. Once you get down to .5mil or smaller though, it takes a really proficient gas gun user to keep up with a bolt gun, especially in scenarios where no make up shots are...
  18. K

    Long COAL .223 Gas Gun

    Its not pretty but it works, and I was able to do it all with a die grinder and file. I may do another like this and next time ill do it a little more proper. I could load all the way to 2.45oal, but thatd be in the lands for this chamber. I think right now im .020 off or so. Thats...
  19. K

    Long COAL .223 Gas Gun

    I have also cut the front my mags, my mag well, upper and barrel extension. I load 75gr elds to 2.42oal and shoot them at 2750 from an 18in gun with a modest load of cfe223. Its like they are in a different league vs mag length 77smks. Factory imi 77gr would do 2650 from this gun. I...
  20. K

    tactical games typical stage round count.

    Each stage will have a specified load out. Ie 4x pistol mags of 8rds and 3x rifle mags of 12x. You need to be able to carry up to 5 mags of each, but you wont always be required to use all five. I dont recall an instance where i ever had to load more then 12rds in a mag. Carbine distances...
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