I've got 2 .375 Wins. - a Marlin and a Winchester bigbore. The only critter I've killed with a .375 Win. so far was a 120 lb. hog using the winchester factory load. I was shooting the Marlin with a scope. (My 94 sports a williams Peep). At the shot a bright red splash at point of impact was visible through my scope suggesting the bullet opened up immediately upon impact with nominal penetration. There was no exit so apparently the bullets are really soft. The pig was shot square on the shoulder so the bullet met with a lot of bone and gristle resistance. It was about a 40 yard shot and the pig didn't go far. I've since bought some 220 grain loads from Reed's Ammo and Wisconsin Cartridge Co. I look forward to trying them out on pigs.
Whitetail are not as dense as hogs. The Winchester load probably gives good performance on them.
Last edited by TexasShooter; 05/15/12.
