Originally Posted by
xyankeeworkshop
Well, I did my first run with PCPb Lee 125 grainers at IDPA last night and the results were not the best. Not a lost cause, but disappointing and in need of some tinkering.
From my Glock 17, I had some pretty severe keyholing at 5 yards and and almost embarassing inaccuracy at 15. The smell was pretty gnarly too, but that's not a deal-killer. Possible causes to investigate:
*Whether the Lee 125 grain TL boolit is a good design for a Glock bore to begin with.
*Is sizing a TL boolit to .357 after coating a good or bad thing?
*Could uneven powder coating on the ogives be causing the tumbling?
*If it is, could PCing just the base and grooves be a solution?
*Should I change my powder charge from one worked up for lead towards one for jacketed?
On the plus side, they fed reliably, were much less smoky on an indoor range, and the bore appeared to stay real clean (still need to pull the barrel again and check it under better light).
BTW, remind me not to do my 'sperimenting at an IDPA match anymore. That was dumb.