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Finally got shoot a 12” PSA pistol upper couple of days ago. Didn’t bother even bore sighting it, SFP scope, just hit the range and let her rip with some American Gunner, like I’ve done dozens of times before. Picked out a leaf up on the bank behind the 100 yard backers. Got the splash off 2 or 3 shots, win big, coarse corrections , and I felt confident enough to put it on paper. 2 more shots at the bull, with more large “intuitive” handfuls of corrections, then another small one, next shot split the X. Done. Or so I thought. ��
Next shot was 3” low, 6 o’clock. Ok, well, it’s just settling in some. Let’s bang off a few more shots, see what happens. Now 4” high 10 o’clock. Then 5” low low right, then 10” left...........holy cow, getting worse. So, I do a “what’s loose check”, scope is good, hand guard not touching anything. Flashhider looks, feels fine. Barrel seem ok, hmm. Few more shots, just as bad if not worse. That’s enough.
So tore the handguard off this afternoon and gave it a once over, expecting, hoping, to find something obviously out place, loose. Nothing. Cleaned the barrel and it looks perfect too, just like every other functioning gun I have. Everything is snug, tight, in place, where it should be. I’ll probably take the barrel off and lap the upper, just for. laughs and see what happens but, I’m at a loss for what else to look for or do?
I get, its just a bargain PSA upper. I’ve got a half dozen of them already. Some of them are ok, one is outrageously consistent with almost any ammo, the rest are decent with specific ammo. But this one, good lord, I have never seen or had anything as bad as this one before. Barrel says “6.5 Grendel 1/8” so, I don’t have any idea where they got it from. I know They get some from FN, I’ve got a couple of those but they’re usually the higher end for them, and priced accordingly.
Already have another pistol, with BA upper that shoots reasonably well. I’ve got two other new 16” barrels that on standby here. So I’m inclined to take it apart, lap it, make sure nothing else is off with the barrel nut/upper interface and see what happens. Anything else I should look for, mayb try, or, with something this bad, erratic, just cut my losses, switch barrels and move on? ��
Edited: Didn’t think of it at the time but, I neglected to check any of the cases for signs of over pressure, so, I suppose that one place to look and check the headspace.
Next shot was 3” low, 6 o’clock. Ok, well, it’s just settling in some. Let’s bang off a few more shots, see what happens. Now 4” high 10 o’clock. Then 5” low low right, then 10” left...........holy cow, getting worse. So, I do a “what’s loose check”, scope is good, hand guard not touching anything. Flashhider looks, feels fine. Barrel seem ok, hmm. Few more shots, just as bad if not worse. That’s enough.
So tore the handguard off this afternoon and gave it a once over, expecting, hoping, to find something obviously out place, loose. Nothing. Cleaned the barrel and it looks perfect too, just like every other functioning gun I have. Everything is snug, tight, in place, where it should be. I’ll probably take the barrel off and lap the upper, just for. laughs and see what happens but, I’m at a loss for what else to look for or do?
I get, its just a bargain PSA upper. I’ve got a half dozen of them already. Some of them are ok, one is outrageously consistent with almost any ammo, the rest are decent with specific ammo. But this one, good lord, I have never seen or had anything as bad as this one before. Barrel says “6.5 Grendel 1/8” so, I don’t have any idea where they got it from. I know They get some from FN, I’ve got a couple of those but they’re usually the higher end for them, and priced accordingly.
Already have another pistol, with BA upper that shoots reasonably well. I’ve got two other new 16” barrels that on standby here. So I’m inclined to take it apart, lap it, make sure nothing else is off with the barrel nut/upper interface and see what happens. Anything else I should look for, mayb try, or, with something this bad, erratic, just cut my losses, switch barrels and move on? ��
Edited: Didn’t think of it at the time but, I neglected to check any of the cases for signs of over pressure, so, I suppose that one place to look and check the headspace.
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