Q: I’m sick and tired of trimming my .375 H&H brass after every couple of reloads. I’m seriously considering having it rechambered to .375 Weatherby Magnum to stop the cases stretching so quickly. I believe you once owned a Winchester Model 70 .375 Weatherby Magnum, so I’d appreciate your comments about it. Also, what loads for 270gn and 300gn bullets?
A: The improved .375 Weatherby Magnum is not overbore like the larger .378 and other super magnums and for those wanting higher velocity for long range work, the .375 Weatherby would be a good choice. My best loads are: Hornady 270gn SP and 92gn of AR2209 for 2830fps and 88gn of the same powder with the 300gn Hornady for 2720 fps. In the event you want to shoot pesky varmints for practice, a charge of 84gn of AR2208 drives the 235gn Speer at 3010fps. For heavier game Hornady makes a fine 300gn solid that I’ve used with great success on buffaloes.