Rottie wrote:I see the point of 9 mm possibly penetrating better due to smaller diameter but 9mm hollow points will end up about the same diameter as .45 and will not pentrate as far without the added mass.
I wouldn't recommend carrying hollow points for bear defense.
Also, your comment that the .45 will penetrate farther than the 9mm -- whether both are FMJ or both are JHP -- is inconsistent with all of the data that I've seen, and doesn't make any sense based on the fact that .45s typically only have about 20% more muzzle energy than 9mm but a 60% larger cross section.
I also agree with no hollow points for bear! Hopefully that was clear in the earlier post. I just know that alot of guys go for the +p stuff thinking it'll be better bear protection but i have only see hollowpoints loaded +p. I have never seen +p fmj but would buy a box if I could.
Here is a link to a decent read http://www.hipowersandhandguns.com/9mm%20vs%2045.htm
. It certainly will never end the 9 vs 45 debate, but here is some real world data that compares the 9 to the 45 in various loadings shot into ballistics gellatin. Penetration all in all is about the same with the 45 getting about .5 inch more in some cases. Like I said, if it is solely for bears, he's better suited with something else, but for all aroiund, a 454 casull is too much for urban carry in my opinion. I'm sure that data can be found to support either round. I found it interesting that in the link the guy doing the tests actually has shot two whitetail deer with a 9 mm with sucess.
When it come to the 2 legged predators both 9mm and 45 ACP are effective.
When it comes to my opinion you get what you paid for. If you want to complain, send me money!