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About sasquatch981

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  • Birthday 12/21/1972

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    Bellingham, WA
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    Matt Pridachuk

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  1. So I have a spare heavy pistol buffer sitting on the bench. I can't remember if it is 7.5 or 10 oz. I'll weigh it, but is there any reason not to use it in a .223 SBR? With an adjustable gas block, and a short 10.5" barrel, will that help keep the bolt closed longer, and lessen the recoil of the short gas impulse? It's late, and I am loopy so I thought I would ask the experts
  2. Case Head Separation issues in PCC

    Is this an issue with the MPX, as it is gas operated, or just crap brass for everyone?
  3. Case Head Separation issues in PCC

    So at yesterday's match, I had a case head separation on the first stage. Total bummer, luckily there was a gunsmith that lived only a few miles from the range, and he was able to get it out. Fast forward to the last stage of the day, and same thing happened again. To that we had another shooter on my squad have a case head separation as well. He was shooting a complete JP rifle, and I have a rifle with JP Bolt, and Wilson Arms Barrel. In looking at both barrels it appears that there is a "ramp" milled into each chamber to allow for easier feeding of the rounds. This ramp is actually milled around the entire circumference of the barrel leaving the "unsupported" area around the entire case. Sort of like the unsupported barrel of a glock but a complete circle. When we found the case that separated, we also noted that it was a IWI case with the "ledge" inside the case right where it separated. Has anyone else had these issues. or did we just have some crazy coincidence and bad brass. I hate the idea of having to sort every 9mm case. If this is the wrong forum, mods feel free to move to gunsmithing, or PCC technical.
  4. 9mm Muffin Top issues

    Seating and crimping are two separate dies. Dillon 650, Dillon seater, and Lee Factory Crimp. So from the sounds of it, maybe the crimp die, is set to "low" and is pushing the round down when crimping?
  5. 9mm Muffin Top issues

    Here are some photos of the bell I have on my cases, and the squidgy seating issues I am having. This seems to happen with coated bullets, and now the Rainier Ballistics. Both of them were 115's with the round nose profile. It does not seem to be an issue in my PCC, or a Rock Island 9mm hicap, but it does seem to lock up the glock with the tight aftermarket barrel. Ideas on what to do?
  6. I have always wanted a "commander" like glock. A 19 top-end on a full size lower. Everything I have read says you can't do it? Why? If all the parts are interchangeable, can't you just cut the end of the "frame" to match with the 19 slide profile? Maybe a polymer 80 frame would be the way to go. Just thinking out loud here.
  7. On the JP Site, I see there are (2) silent buffers for the 9mm. One has what looks like (3) Tungsten, and (1) weight, while the other has (3) steels and (2) Tungstens. In the description it says that the "enhanced" buffer i.e. the one with more weights, is best suited for the heavier non JP bolts, as it allows for the bolt to stay closed longer. If you use it with the JP bolt, will it stay closed too long? Which one would be best for a JP bolt with a short barrel. I understand that barrel does not really matter as there is no gas on the bolt, but with the shorter barrel the pressure in the barrel will release (when the bullet exits) faster correct? Just don't want to but the wrong one first.
  8. Thoughts on RPR

    I have a Gen 1 .243, with a seekins hand-guard. This is the group I shot when I was doing the load development. I then took it to my first "big" PRS match that was not a club shoot. I was able to hit the 1200 yard targets in the wind, and I am not a rifle shooter. The .243 shoots like a laser. As for the scope, the group photo was shot with a Burris 5-25, I now have a Vortex Razor GenII. If you look close in the Classifieds, you can find it there. I like your wife wanted to "try" PRS and did not want to drop several house payments into something I was not sure of. I am hooked, and want to buy a chassis rifle now, so I have to thin the herd to buy new toys. Feel free to shoot me a PM with any other questions.
  9. I read in the 5-page barrel reaming thread that Patriot Defense Reams barrels, but they do not do so to Nitrided ones. As I have a KAW Valley Nitrided barrel, I thought I would ask to see if anyone else provides this service. Maybe in the great NorthWet.....I mean NorthWest
  10. Failure to Extract after non-fire.

    Thanks Bill, I just went through that process with my PRS rifle to find the max OAL that my rifle likes for load development. Didn't think of doing that for this problem, but what a great idea!!!
  11. Failure to Extract after non-fire.

    Ran the plunk test, and it appears I am too long. Buddies ammo is 1.125 with 124GR MG's. Worked fine. My MG 115's are 1.136, and the 147 plated extremes are 1.150. I'll crank out some 1.100's with the small pistol primers and see how that works. Thanks guys.
  12. Just follow with me for a second. I just got my tax stamp, so I can now put the evil upper and lower half together. Took it out to the range for some testing, and was having issues. It appears that my rifle does not like my ammo maybe 50% fired. No problem, the ammo I had on hand had used small rifle primers instead of of small pistol. I thought this might be an issue so a buddy lent me some of his ammo with pistol primers and the everything went bang. However when trying to source the solution, I thought it might be the trigger being to light, or possibly the bolt and FP combo being too short etc.. Parts are an Aero Upper, KAW Valley Precision 8.5" Barrel, and a generic 9mm Bolt cut for Glock mags. Palmetto State Glock Lower, and A Velocity Triggers 3lb flat trigger. The buddy that lent me his ammo also lent me his JP bolt to see if my bolt was the issue. As stated above once I changed to his ammo everything went bang so no issues with the trigger etc. However when I went back to my ammo, and switched bolts again, I noted that when all my ammo would not go bang, when I pulled the charging handle back to eject the dud round, it would not extract it. I thought this might be an issue with the generic bolt, and swapped to the JP. JP did not fire my ammo, and would also not extract the duds either. Even had (1) round of my buddies ammo that did not go bang, and when I tried to extract that one, it did not extract. Any ideas? 2 bolts same issue.
  13. 9mm AR Bolt weight, and buffer choice

    Hi Eric, Standard RRA 9mm Buffer 5.6 oz.
  14. So I was reading about the all the different combinations in thread below, but could not really determine the consensus on what was working, and nothing really sounded like what I have, so I thought I would post this. I have a 8.5" upper, and carbine stock (with spacer in back for less bolt travel). I was reading about removing the weight from the bolt, and using a .308 buffer spring with the 9mm Buffer. Does this sound right? Obviously I want to try and reduce dot jump as much as possible, but I don't want to beat up the parts. What combination seems to be best for a short barrel set-up or does it really matter in 9mm?
  15. Just curious, if anyone has ever tried to to use an aftermarket piston driven system like adam arms, osprey defense, etc on a 9mm AR build. Now before you go an say "the 9mm AR is a blowback design", I know that. I am thinking outside the box here. Trying to lighten the carrier, and all the reciprocating weight. Afterall the Sig MPX is a piston 9mm, and the recoil is alot less than a typical 9mm AR. Just curious as to what you other tinkerers may think.