Originally Posted by Digs

Rob if I were going to buy a .40 I would rather the 10mm like Justin pointed out. A lot of std FMJ ammo for 10 has a tendency to not coming close to living up to its potential (because men have turned in pus-ies) But the is a difference in 180 gr. 40 cal is around 1000 fps /350 ft/lbs vs. 200 gr. 10mm is 1050 fps 490 ft/lbs.

The 10mm has the capability to stomp the nuts off the .40, there is good 10mm ammo out there if you are looking for a top level performer.