My Winchester 70 300 Won Mag loves RL22 and 200 gr. Speer bullets set .015 of the lands/grooves
The 220s should do better but I never got around to trying any, or any 165s. Have some 200 gr Noslers that I am going to work on next. The load I have shot the most is the Nosler Protected Point 180s {on top of IMR 4350} because I can seat the bullets where the barrel likes {I have shot 1 1/4" at 200 with them}. My magazine is a bit short for other bullets to be seated out as far as the gun likes so the spire point bullets make the rifle a single shot.
The 220s should do better but I never got around to trying any, or any 165s. Have some 200 gr Noslers that I am going to work on next. The load I have shot the most is the Nosler Protected Point 180s {on top of IMR 4350} because I can seat the bullets where the barrel likes {I have shot 1 1/4" at 200 with them}. My magazine is a bit short for other bullets to be seated out as far as the gun likes so the spire point bullets make the rifle a single shot.