Last October I bought a couple of boxes of Winchester/Olin 150 grain Deer Season XP ammo and shot good groups with it in a couple of Marlin 336s and Mossberg 479s. I have generally found that 170 grain Remington RNCLs will produce good groups in just about any rifle that I'vs shot them in. I generally try 170 grain FED/REM/WIN and settle on the one that shoots the best groups in that particular rifle. I don't know if the higher velocity of the 150 grain factory loads is useful at the shorter ranges that people usually restrict themselves to when they're shooting 30-30s. The 160 grain Hornady FTX shoots good groups in my Savage 170 and has a better BC than the round nose factory loads.
