Something I have found about bullet's is that if you choose a proper bullet and work within the parameter's it was designed to function in, they all work about 99.9% of the time. Now and again we hear of a bullet that didn't work in some way. Usually I think we'd find that the bullet was driven outside the limits it was designed for. Things get into vogue and there's those that want to test them in their hot rod. That they have failure's comes as no suprize to me.
I recall the one bullet failure I had, no it did not kill the animal! I wanted a hot 140gr load in my 7mm Rem Mag so I loaded up some 140gr Sierra's and boy did they shoot well. Well thw first animal I had a shot at was a black bear facing me about 50yds off. Took it right between the shoulders and off it went about 75yds till it got sick and laid down. Another at point blank range behind the head finished it.
The first shot hit exactly right. The bullet penetrated maybe 2" and blew a big hole in a whole bunch of fat! Never got inside. Bad bullet? No just not the proper bullet. Far to many guy's choose improper bullet's. But the new leadless bullet's maybe will put an end to that , doesn't sound like you can abuse them.
