At one time I bought a pickup-truck load of items from the old gunsmith room at Griffin & Howe when they were moving from their Bernardsville store to their Hudson Farms estate. I no longer have most of it, but when looking for something in my ammo safe I came across 5 original 375 Hoffman Magnum loaded cartridges, plus a box of ammunition marked G&H 22-3000. Pretty cool old stuff!

Sounds cool.
Is the 375 Hoffman sort of an “improved” H&H?
I have some 300 Hoffman headstamped brass which is much like an improved 300H&H. Well before the 300WM came along.

Actually, the 375 Hoffman Magnum is identical to the 375 H&H. They just named it after their own company.

The 375 Hoffman headstamp is quite collectible.