I've been handloading for awhile now, about 7000 rounds behind me, various pistol calibers and some rifle as well.
I've loaded about 2000 9mm, and fired most of them without issue. Most of these were in my old SR9c, a carbine, and a Taurus which I now wish I hadn't sold.
I had run some of my reloads through my CZ 75b (it's relatively new, maybe only 3-400 rounds), but none of the RNFP reloads, which had shot fine in all the above, previously. I was loading them between 1.125 and 1.135, depending on how warm, but nothing too hot.
I took a couple of boxes of these to the range with me yesterday (1.125's) and promptly jammed my CZ on the first feed. Managed to get it closed, cycled a couple, jammed again, and I gave up and went home.
Did some experimenting last night (made some dummies and pulled the barrel), and it turns out I have to load them around 1.060-1.070 to get them to sit properly in the chamber.
Has anyone else had this problem?
I see a few random postings in THR and similar, but most got their 75b to feed at about 1.115, which I'd be fine with.
The lowest published load I found was for 1.090, which makes me really skittish about loading down at 1.060.
I know I can load them shy, powder-wise, but the whole thing feels like a kludge to me.
I'm wondering if I've got a barrel that's not quite reamed fully?
I took out some S&B 124's (RN) last night too, with my barrel removed, and some of those wouldn't seat cleanly either.
Thoughts, ideas?
Thanks,
-pete