I have a friend who has a custom 375 H&H, it shoots fine at 100yds. groups run about 1" to 1 1/4"s. As soon as he moves to 200 yds, the groups open up to 4" to 5 "s. Since I have never owned a 375 H&H, I really can't help him much. He is shooting one of the lighter weight bullets, I believe a Nosler Partition around 225 grains(not exactly sure if that's correct). My question is, has anyone here shot the 375 at ranges greater than 100 yds and what kind of results should he expect. Any load information would be appreciated. I think he is currently using Win-760 powder. Perhaps a different powder and bullet combination would be better but I would like to hear from those with experience with this caliber.