mineralman55
Well-Known Member
Who might be considered the "best" AR gunsmith, preferably in or around the Northshore? I have some issues with a 308AR I need looked at.
"Best" AR Gunsmith
- Thread starter mineralman55
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"Best" AR Gunsmith
As much as this one is; I'm sure that was a helpful post....
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It usually helps when the OP posts their issue. Most AR problems come from mismatching parts or from out of spec parts. Unless he sheared off the indexing pin, I don't see what a true Gunsmith is needed for. He's asking who the best person for the job is, but it's difficult to recommend someone for the job, when you don't know what the job actually is.
mineralman55
Well-Known Member
I didn't want to write a tome, but here we go. I have a home built Mega Arms upper/lower with an 18" Mega 1:10 barrel (which Rainier Arms headspaced to my bolt, I've never checked it), a hardened arms phosphate BCG and a Syrac GenII adj. gas block. First time out it functioned perfectly (FGMM 168 BTHP and 7 different handloads all using Sierra 168 BTHP and got it sighted in at 50 yds. Shot about 50-60 rounds. Second time out with reloads function was spotty at best, lots of failure to feed. The rounds would get hung up on the ramps leaving huge triangular dents on the shoulder of the cases. Third time out everything was performing perfectly for about the first 50-60 rounds. Then I started getting the same FTF, cases hung up on the ramp getting the triangular dents in the same part of the shoulder. I got tired after a few more rounds and stopped.
Got to think about what is going on here. Problems occur whether I use a Magpul or an ACS mag. The gas block I adjusted as per Syrac instructions: screw all the way in, 1 1/2 turns out, one click out until the rifle cycles, then an additional click out. I tried further adjusting the gas block out, no help. Perhaps I should have adjusted it in.
It could be me, or the rifle could be heating up and the tolerances stacking to cause problems, the ejector spring might be too strong. Perhaps the barrel is coming loose, I doubt that but you never know. When I installed it, I tightened and loosened it three times, then torqued about 60 ft-lbs.
Accuracy is somewhat strange as well. At 50 yds. I get excellent accuracy, 10 shots basically touching. Move out to 100 yds and I get a shotgun pattern.
This is why I hope to get a knowledgable AR gunsmith to look it over and see if there is something stupid I did during the build.
Thanks for any input you might have.
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It could be the reloads but it sounds like you're short stroking. Does the bolt lock back when you empty a magazine? If so it means your gun is under gassed. Open the gas block up. If it still won't cycle its most likely because the gas block and gas port aren't aligned. Any particular reason you're using an adjustable gas block with you're .308? Unless you're running it suppressed there's not really any benefit to it and really all your doing is adding one more variable into the equation.
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also check your buffer/spring combo. 308 buffers are shorter, and I used one that wouldn't grab the next round. I swapped it out for a POF specific buffer and it has been functioning 100% since. Also as far as groups, mine was shooting crappy groups with cheap ammo (given), swapped over to some 175 gr silver state armory rounds, and it tightened up considerably.
What brand? Some of the stuff out there is complete ****!
mineralman55
Well-Known Member
Do you bother to read? This is why I didn't want to air this issue, I simply wanted the name of a competent AR gunsmith. The rifle has worked just fine with my reloads. Something else is coming into play here.
mineralman55
Well-Known Member
Standard DPMS buffer tube, buffer and spring. Magpul fixed stock.
I̶ ̶r̶e̶a̶d̶ ̶i̶t̶,̶ ̶t̶w̶i̶c̶e̶.̶ ̶Y̶o̶u̶ ̶n̶e̶v̶e̶r̶ ̶m̶e̶n̶t̶i̶o̶n̶e̶d̶ ̶t̶h̶e̶ ̶r̶e̶l̶o̶a̶d̶s̶ ̶w̶o̶r̶k̶i̶n̶g̶ ̶j̶u̶s̶t̶ ̶f̶i̶n̶e̶,̶ ̶y̶o̶u̶ ̶s̶a̶i̶d̶ ̶i̶t̶ ̶w̶a̶s̶ ̶"̶s̶p̶o̶t̶t̶y̶ ̶a̶t̶ ̶b̶e̶s̶t̶.̶"̶ ̶N̶o̶ ̶n̶e̶e̶d̶ ̶t̶o̶ ̶g̶e̶t̶ ̶s̶a̶l̶t̶y̶.̶ Just don't be salty
Load a mag without the upper attached, and check the bolt catch and magazine catch. If that's fine, I'd have to agree with lattin1.
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Sorry, the brand of ammo?
"Best" AR Gunsmith
Is this the part that said it worked fine the first time?? DaveM, does it look like it to you??? If people get "salty" with you Dave, it's most likely due to your arrogant attitude.
Is this the part that said it worked fine the first time?? DaveM, does it look like it to you??? If people get "salty" with you Dave, it's most likely due to your arrogant attitude.
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Is this the part that said it worked fine the first time?? DaveM, does it look like it to you??? If people get "salty" with you Dave, it's most likely due to your arrogant attitude.
That's commitment to your point there, Sir!
Why you salty tho?
That's commitment to your point there, Sir!
I was 10 minutes late on my "Get someone annoyed by noon" goal.
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