Well in my latest posts I've wrote about how my TC Bone Collector hasn't shot very well. So when I went to the range I decieded to back down the powder. Prev. I was using 100 grains of BH209 with the 300 grain XTP Mag/Crushed Rib Sabot. The only thing that I changed was how much powder I was using. The first pic was at fifty yards using 80 grains of BH209. And the second pic was at 100 yards. Now most of the shots are in a 3 inch group, but I know that this rifle can do better. I did clean the gun before moving to 100 yards. What I worry about is if it spreads like that at 100, what will 200 yards be like? If I increased the powder charge would the group shrink? Also digging in the dirt bank I found some bullets that didn't mushroom like they are suppose to. Now at 100 grains they performed great. So I'm wondering if I don't have enough velocity for this heavy bullet. Now someone please correct me if I am wrong here. Blackhorn209 you can only using a max of 120 grains. In Pyro and 777 you can shoot 150 grains. So in my head I figured that 1 grain of BH209 equals 1.25 grains of "norm"(777, Pyro, Goex) black powder. So using 80 grains of BH209 is equal to 100 grains of "norm" black powder. Is this right and if so shouldnt that be enough knock down power for most big game? I may go back out at shoot tonight and/or in the morning.