heres a link to a article i think you may want to read before you go bashing my choice of a 45 acp, somebody said they think the 45 acp is overated thats why they like a 40 smith better somebody else stated that 40 smiths ballistics are close to the 45 acp, which in the books it is, but in a real situation i feel the 40 wont perform as good as a 45. heres the link enjoy
http://www.chucktaylorasaa.com/stoppingpower.html