A couple weeks back someone wanted to know if a powerbelt would work in a 1:66 twist barrel, so i loaded up my kentucky with 70 grains blackpowder and a 295 grain aerotip powerbelt, got great results and today i wanted to see what the powerbelt looked like. That sucker went in over 9inchs and mushroomed liked it should. Now ive heard about the phone book testings and all that. I was shooting at a freshly cut piece of blue spruce. I think these bullets held up great. out of 3 shots, i only found one, the other 2 passed completly through that log which was a foot and a half long. So, for those who are having/ had trouble with getting pass through shots on deer sized game, you need to find the sweet spot on that animal and put it through.