I just got the rifle two days ago.Went to range with some Hornady Black in 140 grain BTHP.Groups at 100 meters where ok.Could have been better.I don't call 0.250 that great.Broke the barrel in first.Then shoot for groups.Then shoot groups at 200 meters.Shoot three groups in five shoot groups.Got better at the end of the 100 rounds.My groups where 0.625 = 5/8".Now take the diameter of the bullet 0.264 and - 0.625 and I get a group center to center 0.360.Now I think that's better.If there is a better ammo please let me know.I well be reloading for this rifle.Going to try H4350 and H4895.Thank you your help.