I know the 9mm vs 40 vs 45 debate has gone on again and again. I have searched and I have read the internet reports, the FBI reports, and quite a few articles. Basically I have found that if you want a reason one round is better than another there is some "expert" out there that has published something that will agree with you. However, the majority of what I read is:
Given all that info, is the only reason LE agencies are going to 40 from 9mm to achieve more consistent expansion, and the only reason they are not going to 45 is because of expense and less rounds per magazine?
- 9mm is cheaper to shoot than 40 and 40 is cheaper than 45
- The wound ballistics of 9mm +P in JHP are almost identical to 40 in JHP given adequate expansion and VERY close to 45
- 45 trumps 9mm in battle because NATO allows only FMJ which does not apply to LE or private citizen use of weapons since they both generally carry JHP in most states.
- If you can control the recoil of 40, you can probably control the recoil of 45, however it seems that it doesnt always work the other way around.
- 9mm has less recoil than 40 or 45 in factory ammunition even +p+
- 9mm offers more rounds than 40 or 45, 40 offers more rounds than 45 in the same size magazines.
Given all that info, is the only reason LE agencies are going to 40 from 9mm to achieve more consistent expansion, and the only reason they are not going to 45 is because of expense and less rounds per magazine?