Phaedrus/69
Member
If the 45ACP is fading away, it is due to sheer ignorance. It IS more effective than anything but a 357, according to research done by Greg Ellifritz. It takes almost 3 rounds of 9mm to be as effective as 2 rounds of 45ACP. So you would have to carry 50% more 9mm, and shoot 50% faster. It is so tolerant a round for reloading.
One of us is misremembering his meta-study. I recall that the difference between 9 & .45 was about .2 (two-tenths) of a round. The 9, .40 and .45 were all clustered very tightly with little to recommend one over another. All lagged dramatically behind the 12ga and "rifle" rounds. But I'll have to look at the study again.