I am using 200 gr Dead Center bullets by Precision Bullets in my Encore. I called the owner and he suggested the 200's for whitetails. Last summer I didn't have the time to really work up a load, so I tried the 200's and two Pyrodex pellets I had in my box. I got 1 1/2" groups at 100 yards and I was happy. The deer I knocked off her feet with a straight on shot at 50 yards was not so happy. I also bought some 220 grain DC's, but my groups opened up a bit, but still acceptable. I had tried some Shockwaves, but I had a terrible time stuffing them down my barrel. You can buy DC's from Cabelas. You should also visit the Precision Bullets web site. Jim