"Glock 20 10mm......... Does everything all the other calibers available in Glocks can and everything they can't! }
I own two 10mm glocks, and CARRY one almost constantly by choice over all the other guns I own, and while I don,t think they cover all uses a handgun could be asked to do, I do consider them one of the very best choices in a personal defence handgun. in my opinion you carry a handgun for a tool to stop an attacker as fast as you can, so you might as well use the most potential power at the target available in a convienent package you won,t leave at home because its too large or hard to carry, that still allows full control and a fast potential for a second or third follow-up shot on target, or targets
should that become necessary and that the 10mm GLOCK excells at!
look at the two heavier bullet options
WHY?
well you can,t always count on the creaps not being smart enought to use cover, before starting something and ID prefer a bullet that slaps thu light obsticals rather than getting stopped by them
10mm: Cor-Bon 200gr Penetrator 1,200 feet per second 640 foot-pounds
.357 Mag: Cor-Bon 180gr JSP 1,265 feet per second 640 foot-pounds
10mm: Cor-Bon 180gr JSP 1,320 feet per second 696 foot-pounds
.357 Mag: Remington 165gr CL 1,290 feet per second 610 foot-pounds
.357 Sig: Hornady 147gr XTP 1,225 feet per second 490 foot-pounds
.45 ACP: Cor-Bon 230gr +P JHP 950 feet per second 460 foot-pounds
.40 S&W: Speer 180gr Gold Dot 1,025 feet per second 420 foot-pounds
9x19mm:Pro Load 140gr +P 1,100 feet per second 376 foot-pounds
.45 ACP: Federal 230gr Hydra-Shok 850 feet per second 370 foot-pounds
10mm: Pro Load 155gr Gold Dot 1,350 feet per second 627 foot-pounds
.357 Mag: Federal 125gr JHP 1,450 feet per second 580 foot-pounds
.357 Sig: Cor-Bon 125gr JHP 1,425 feet per second 564 foot-pounds
.40 S&W: Winchester 155gr STHP 1,205 feet per second 500 foot-pounds
.45 ACP: Hornady 200gr XTP +P 1,055 feet per second 494 foot-pounds
9x19mm: Winchester 127gr +P+ 1,250 feet per second 450 foot-pounds
10mm: Pro Load 135gr Nosler JHP 1,440 feet per second 627 foot-pounds
.357 Sig: Cor-Bon 115gr JHP 1,500 feet per second 575 foot-pounds
.357 Mag: Cor-Bon 110gr JHP +P 1,500 feet per second 555 foot-pounds
.40 S&W: Cor-Bon 135gr JHP 1,325 feet per second 526 foot-pounds
.45 ACP: Cor-Bon 185gr JHP +P 1,150 feet per second 543 foot-pounds
9x19mm: Federal 9bple 115gr +P+ 1,300 feet per second 430 foot-pounds