772, You will need a dial caliper to measure overall length.
Also read as much as possible about your incoming equipment and read and reread a good loading manual. This is the key to understanding reloading.
I have used Accurate Arms #2 Improved powder in the 9mm with Hornady bulk 115 FMJ bullets, Winchester Small Pistol primers and most brass, for all my 9mm firearms. I load moderate loads, not max for all my practise rounds. This loading is inexpensive, functions all my 9mm firearms, and is somewhat accurate in all. I don't crimp any of my loads for the 9mm.
AA#2 IMP may not work in Sig firearms though. Welcome to reloading-------------Chainsaw
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