Would .40 (.400”) ball stop any better than 9mm (.355”) ball? I don’t think it would make that much of a difference, and with 9mm you get more rounds in the same length magazine.
New math, two 9s = one 45.
My Glock hold 15 in the mag and 1 in the chamber. most 9s are the same. .40s are usually about 155-165 grns as opposed to 115-125 for 9s, in my book that’s a lot more stopping power. This is all personal preference I know, and from a tactical aspect round placement is more important that bullet weight. All things being equal, I’ll take the bigger and heavier bullt
“Would .40 (.400”) ball stop any better than 9mm (.355”) ball? I don’t think it would make that much of a difference, and with 9mm you get more rounds in the same length magazine.”
It a HUGE difference because diameter isn’t the only measure of effectiveness.