Right now I am shooting 250gr Shockwaves in my Omega with 100gr of T7 pellets with 2-3 inch groups at 100 yards. I have some Mag Express Sabots with the .44cal XTP bullet that I would like to try. I am just wondering about which bullet has the best on game performance for deer. My shots are usually 40 yards or so up to the max of 100 yards. I have not shot the mag express in the omega yet but hope to soon. Also I have seen people talk about .44cal xtp and .45cal xtp. Are there any advantages of one over the other? Thanks.