redbone
Member
I picked up a new 9 mm pistol last weekend and was running some Winchester White Box 115 grain FMJ thru it to get acquainted. One round caused a stoppage. The slide would not close, it was open maybe a tenth of an inch. Completely out of battery. I tried loading it in a couple of subsequent magazines, with the same result.
I have now carefully measured the case dimensions, and discovered that the offending case is 0.762 inches long. The remaining rounds in the same box are right at 0.745. The SAAMI spec is 0.754 - 0.010 inches. So the bad round is 0.008 inches too long, and the good rounds are just barely longer than the short end of the spec.
This all makes me think that we should check case dimensions on every carry round. Or maybe just carry revolvers!
Of course, this is really cheap practice ammo, I've just never run into this before. I suppose that higher quality, more expensive SD ammo may be subjected to better QA/QC during manufacturing.
Anybody had a similar experience?
RBH
I have now carefully measured the case dimensions, and discovered that the offending case is 0.762 inches long. The remaining rounds in the same box are right at 0.745. The SAAMI spec is 0.754 - 0.010 inches. So the bad round is 0.008 inches too long, and the good rounds are just barely longer than the short end of the spec.
This all makes me think that we should check case dimensions on every carry round. Or maybe just carry revolvers!
Of course, this is really cheap practice ammo, I've just never run into this before. I suppose that higher quality, more expensive SD ammo may be subjected to better QA/QC during manufacturing.
Anybody had a similar experience?
RBH