Just returned from a big gopher hunting trip where I tried some of these little 40 grainers. I usually stick with the 55gr bullets but the BC on these was not too far off of a 55 so I decided to give it a go. The Explosiveness was amazing!!! It was a windy and I only had a few loaded, so I did not try anything past 350 but let me tell ya when those little buggers are hit anywhere in that range it is quite a sight. They also turned out to be the most accurate bullet in my gun when loaded around 4500fps. The only thing that is killing me is that I can easily shoot them faster but the groups turn into shot gun patterns if velocity is much higher. Just some information I thought I would pass along. Anyone else know of a good bullet in the 40gr weight that could hold up to say 4900-5000fps.