By law no newly invented rounds can exceed .50 caliber (I think .500" exactly but there could be a few thousandths leeway.) Some of the more powerful "big boy" rounds Ive seen for the Encore include the .50 Alaskan, .500 Whisper, and see what JD Jones has done with the .50- 3 1/4" sharps, put .50 BMG bullets in it. Very cool if not too traditional :grin: .
Brian M.