Advice Needed

[DavidJayUden]

Don:
Pushing up on the magazine simply tests the mag. catch for wear. If worn, the magazine hangs too low and causes feeding issues, which I have experienced on at least 1 occasion and which was remedied with a replacement mag. catch button. This is not suggested as a normal practice for shooting, simply as a trouble-shooting test.
dju

[G.T.]

lets go back to the very beginning! take your different ammo out to the range..... load one round in the magazine, charge the gun, fire and see if it locks back...everytime!!!!! ... until you have this function 100% nothing else matters.... this tells you if the spring is not too strong, and if the ammo has enough energy to get it to the holdopen! ... Now, go to two rounds, three, etc....
If you have jams discern what type? Failure to feed? If it is picking up the ammo ahead of the rim, then the magazine spring isn't strong/fast enough? loaded round smokestack? Then the ramp is rough or incorrect. to steep? Or, the feedlips on the mag too long, not letting the cartridge base hop up? Or, the ammo is too short.. Win. ammo is golden in this regard, I'm not saying it is as long OAL as it should be, but it is long enough to work! Smokestack or stovepipe jams on empties? Most likely even while feeding a new round... If all else works as far as feeding, locking open, ammo etc. then the magazine whether loaded or empty, is still sitting too low in the frame?.. It needs to hang in the mag well at just the right height to eject properly... Too low and the cartridges won't rebound off the following cartridge or follower itself?.... Holding it up might help if you get it just right, but often the pressure hinders it as much as the elevation helps it..... If you can't make it work then send it to me! I'm just silly enough to hunt the problem down and then kill it!... ... best to all, til...lat'r....GT...

[DonVoigt]

Originally Posted by DavidJayUden

Don:
Pushing up on the magazine simply tests the mag. catch for wear. If worn, the magazine hangs too low and causes feeding issues, which I have experienced on at least 1 occasion and which was remedied with a replacement mag. catch button. This is not suggested as a normal practice for shooting, simply as a trouble-shooting test.
dju

I understand,
but it sounded like he was doing it ALL the time, maybe not though.

Castle,
You say you have not polished the chamber- but not why you have not! Just do it, you have tried everything else!

At least that would eliminate one possible source of trouble, or at best cure it!