Pistol Calibers... Whats the best

even with a bp vest, I wouldn't wont to get shot with a 45acp. we had some extra plates when I was in Iraq my sec tour and we did our own lil tests. every cal was stopped, but the 45 and the 357sig knocked the 200lb test dummy over, and fractured the back of the plate. me personally, I don't much over penetration so anything running faster than 1000fps will punch n keep going into an unwanted area ie: bistandards or adjacent houses. I agree with kevin too that if u cant hit the person with a 9,40,10,45, then them cannons wont make a difference. iv nvr shot a 40, but if its recoil is like a 9, you can bang away n keep sight control, but if ur not used to heavy recoil and rapid firing, the 45 aint the gun for ya.