I shoot Triple Se7en but I use loose powder. I do not shoot a magnum rifle. Never really saw the need for one. I shoot my .54 caliber with 85 grains of loose T-7 and it has all the power I need to take a deer off their feet. I have never shot out to 100 yards with it yet, but was shooting targets in the yard at 70 yards with great results. I took three deer with it this year, and one deer at 60 steps never moved. She was hit with a roundball, and it took her right off her feet. So 100 grains of the stuff would have a lot of power to it... Good luck with your rifle.