If its a .50 caliber, try 80 grains of 777 powder and a 220 grain precision rifle dead center bullet. The recoil is not too bad and the bullets (all lead) expand extremely well. I live in Eastern Oklahoma and shoot close distances while muzzleloading (usually 50 yds or less). I used to shoot a 300 grain hornady XTP bullet and 90 grains of pyrodex rs. Extremely accurate but the bullet woudln't expand, there was no blood trail and I lost 3 deer with it. I got advice on the realtree forums, switched to the precision rifle bullet and will never go back. They are INCREDIBLE. Here is the photobucket link to the 2 recovered bullets, the one on the left was shot with 100 grains of pyrodex rs at about 20 yds, the one on the right was shot with 80 grains of 777 powder at about 50 yds http://i21.photobucket.com/albums/b256/gt2003/precisionrifle220graindeadcenters.jpg . Both did the job quickly. If you have any questions, just ask. Good luck, Greg