I have shot 155, 180, and 200 grain XTP, plus 135, 180, and 200 grain Nosler Sporting Handgun bullets. I will tell you the two best bar none for hunting anything up to Moose and Bear is the 155 grain XTP and the Nosler 200 grain Sporting Handgun. These two bullets for my TRP 10mm are more accurate, and stabilize better than anything else out there. But hands down the 155 grain XTP is my go to for hunting pigs, deer, and bear. Oh yeah, also Turkey are great game for this pistol. The 155 grain XTP has plenty of knock down power, it holds ballistic performance for longer distances than any other bullet....and before arguing that. Go to Vortex LRBC, they have an awesome reloading calculator that gives you a breakdown in yardage increments of whatever you want, that breaks down drop, bullet energy, and velocity in every range listed. The 155 grain wins hands down out to 100 yards. It also penetrates enough to take down even the biggest moose or bear out there, even if hitting bone. Don't believe me still, watch Razor Dobbs and listen to him on multiple episodes. He uses 155 grain Double Tap ammo more than just about anything else. Sometimes he'll use 180 grain. But other than when he's in Africa with hard cast bullets, he pretty much readily uses 155 grain to kill. And he kills everything with it.