For 8 safaris in Zimbabwe I have used 260 gr Nosler Partitions over IMR4350 with complete success. Use the powder charge that shoots best in your rifle, for me that was under full charge by several grains. My Model 70 custom shot a .70 group of 20 rounds fired as fast as you normally would shoot and reload. The gun has a laminate stock and holds 2 rounds down with one in chamber for 3 rounds. It's a stainless classic. I have used this gun and load on everything from duiker to Eland with complete success many more than one times.