Meeko said:
How is going to 9mm a step down when performance today's 9mm is on par with every other common handgun round? 25 years ago sure valid criticism today however the ammo companies have the expansion and penetration at key optimum levels for the 9mm with it's velocity. They also have several street shootings in the real world to back that up. Not the same 9mm we used in the late 1980's.
If anyone likes a certain caliber over another today it's more about personal preference than performance!
9mm ballistics: http://www.ballistics101.com/9mm.php
Federal Ammunition Ballistics
Muzzle Energy ft·lb Muzzle Velocity ft/sec.
9mm FMJ 124 364 1150
9mm FMJ 115 356 1180
9mm FMJFP 147 326 1000
9mm JHP 115 356 1180
9mm Hyd-Shok 124 345 1120
9mm Hyd-Shok 147 326 1000
9mm Hyd-Shok 105 353 1230
.45 ACP ballistics: http://www.ballistics101.com/45_acp.php
Federal Ammunition Ballistics
Muzzle Energy ft·lb Muzzle Velocity ft/sec.
45 ACP FMJ 230 404 890
45 ACP Classic Hi-Shok JHP 185 371 950
45 ACP JHP 230 369 850
45 ACP FMJM 230 378 860
45 ACP +P Bonded HP 230 461 930
45 ACP +P Hydra_Shok 185 524 1130
45 ACP Hydra_Shok 230 414 900
9mm ammo costs average per box: $13.99-$24.99 http://www.midwayusa.com/find?sortby=1&itemsperpage=24&dimensionids=4294846234&newcategorydimensionid=15422&searchscope=all
.45 ACP ammo costs average per box: $20.63-$41.99 http://www.midwayusa.com/find?sortby=1&itemsperpage=24&dimensionids=4294846234&newcategorydimensionid=15597&searchscope=all
9mm SMALL HOLE
.45 ACP BIG HOLE
In the end, it all comes down to cost. 9mm is a cheaper bullet.