So last week my wife and I ran into a teenage black bear in the Northern Cascades which got me wondering about the wisdom in my carrying a 3" 9mm into the woods. I couldn't convince her to let me buy a suitable woods gun, so I ended up buying some of these from Double Tap ammo: .450SMC is a cut down .308 case with a .45ACP bullet inserted. They can be used in any .45ACP capable of firing +P ammo and they put out .357mag numbers. These 255gr loads will scream out of my 1911 at a little over 1000fps and they are 10% heavier than standard ball ammo. The only modification recommended is to get a strong recoil spring. I just got these in and have yet to test them out. Does anybody have any experience with these?