My Ruger 77 all weather 300 WSM didn't shoot the winchester factory 180gr power points very well. I reloaded some 180gr XLCs which shoot a .6" group at 100 yards and some 150gr Core-locks that shoot a .5" group at 100 yards. The 180gr power points are the only factory ammo I have shot threw the gun but I have had multiple hand loads that have shot under 1.25" at 100 yards.