I have shot thousands of the H&G 68 205g hard cast lead through a variety of Glock .45ACPs and struggled getting them to feed properly until I looked into the OAL and started lengthening it little by little until they feed, fired and extracted perfectly.
I messed around with the crimping and the powder charge to no avail in solving the feeding problem until I "got me some book learnin" and adjusted the OAL. No set formula worked for all guns and each gun is a different beast. I ended up going with the longest OAL that would function through the mags to end up with one OAL for all the .45 shooters I had.
1911's were much easier and didn't require hardly any fussing.
