I have a 10mm 1911 with (what I think is) a tight chamber, and it was regularly having 3-point jams with 180gr RN-FMJs at a 1.260 COL. After asking around, I got a suggestion to load them shorter to fix the feeding problem. It did... sort of.
I loaded about a hundred at 1.245 COL, but this made me a little nervous about pressure. They seem to feed fine now, but I cycled them through (dropped the slide on a couple mags, one by one) and then remeasured them to see if the feeding process was shortening them even more, and they're coming out around 1.235 COL, some even less.
My question is: should I be worried about pressures at these shortened lengths? I'm using book-listed powder charges (not max, more like low-mid) for 1.260 COL. If this is a problem, what can I do?
Thank you!
I loaded about a hundred at 1.245 COL, but this made me a little nervous about pressure. They seem to feed fine now, but I cycled them through (dropped the slide on a couple mags, one by one) and then remeasured them to see if the feeding process was shortening them even more, and they're coming out around 1.235 COL, some even less.
My question is: should I be worried about pressures at these shortened lengths? I'm using book-listed powder charges (not max, more like low-mid) for 1.260 COL. If this is a problem, what can I do?
Thank you!