yes the .45 is bigger while the bullet is still in the case but when the .45 fails to expand from a short barreled pistol like ones you are considering its MUCH smaller than a fully expanded .357sig or 9mm.
good .357sig and 9mm bullets will expand up to about .70 caliber and possibly even higher. and then you look at a .45 that will have a good chance of just staying .45 caliber. now which is bigger?
also the difference is much less than most people think in stopping power. i just decided that i'm gonna get a Glock 19 instead of a .357sig. i heard once that 75% of people shot with a handgun live and 75% of people shot with a longgun (rifle or shotgun) die.
that being said you will outgunned with any handgun so you might as well have one with more rounds and that STILL HAS GOOD STOPPING POWER. 9mm is more than adequate stopping power for almost all situations. i would feel better armed on the streets with a G19 than with a .45 (at least a compact .45).
good .357sig and 9mm bullets will expand up to about .70 caliber and possibly even higher. and then you look at a .45 that will have a good chance of just staying .45 caliber. now which is bigger?
also the difference is much less than most people think in stopping power. i just decided that i'm gonna get a Glock 19 instead of a .357sig. i heard once that 75% of people shot with a handgun live and 75% of people shot with a longgun (rifle or shotgun) die.
that being said you will outgunned with any handgun so you might as well have one with more rounds and that STILL HAS GOOD STOPPING POWER. 9mm is more than adequate stopping power for almost all situations. i would feel better armed on the streets with a G19 than with a .45 (at least a compact .45).