This morning, I verified zero with my 6+1 cartridge, 7 pound Brockman .375 H&H model 70, with 300 grain Trophy Bonded ammo, that I plan to take deer hunting on Kodiak Island in a few weeks. With zero confirmed, I got to shoot 200 yard steel -- let's just say the recoil was invigorating, and the steel swinger moved a tad further than with .556 or 7.62x51. Afterwards I shot some Brenneke slugs at 100 yards thru my Beretta Storm shotgun and Vang 14 inch 870, and they felt sub-caliber by comparison.