Old3GNR

I'm running Precision Delta 124 JHP @ 1.120" in Glock mags with no problems.

I've been shooting local matches for 3 years with a PCC. Almost all starts have been with butt stock on belt, a few low ready and occasionally, if pistols start "Hands on Xs", PCC starts muzzle on X. That's what I would practice.

I have seen competitors using lasers on rare occasions and considering getting one but decided improving my shooting would pay much better results.

Yes

I used the Odin AR part and drilled and tapped the original JP mag release.

I switched to the Techwell and it works fine. Best improvement to the GMR-13 was an extended mag release.

I have been shooting USPSA for many years in Open and Limited pistol class. The biggest change for me shooting PCC was thats its scored minor. You get 3 points for a C instead of 4 points. Concentrate on trying to shoot all "A" s. I am not shooting on the move nearly as much as I did with a pistol. I'm a B shooter is all classes.

Punch and hammer works and small engraver tool works as well. Switch to JHP and the problem goes away.

I'm running a JP GMR-13 with their trigger. Without any attempt to lighten the pull, its now about 2-1/4#. I run a Geissele 2 stage in my "PRS" type AR and like it for that purpose. Tried a 2 stage in the same gun when shooting 3 Gun and went back to JP.

I ordered the spring pac and use one of the lighter springs in my GMR-13.

I have a JP GMR-13. Over 8000 rounds and several matches. I've had two malfunctions, 1 primer didn't go bang and somehow a .380 case got through my ammo check.

If doing thousands, Giraud. I use one machine with two different cutters for .223 and.308. It's so quick and easy that I run all of my .233 brass through it whether they need trim or not. Way faster then measuring length.

I used my Open gun for steel as well as USPSA for many years. I used a 95 gr JSP bullet running 117 PF as a steel load.

Using a TF +10 with a Glock 33 mag, I've never had to reload on a normal USPSA stage. The last match I shot was a Monster match and one stage was 62 rounds but no issue reloading during movement. My buddy ws using a MBX 57 round mag which eliminated all reloads except for the stage previously mentioned.

I have used Delrin in the past to make auto racing suspension bushings. No failures. Trying to save 1.7 Oz when a loaded mag is pushing 1# seems like a waste.