I have a box of once fired (by all appearances) brass with a headstamp of 45-70 Mag Lever Gun. The case lengths and weights are basically the same as my R-P and Starline cases, so I assume they are standard 45-70 cases with a unique headstamp. My question is whether anyone would value having these cases over normally stamped 45-70 cases. If not, I'll just toss them in with the rest of my cases and make them a part of my reloading rotation.

I think they might be cases made for Buffalo Bore. They have SR primer pockets to reduce the risk of detonation in the magazine from heavy recoil.

https://www.buffalobore.com/index.php?l=product_list&c=35

You’d need to keep them separate from your regular cases with LR primer pockets.

Nope. They require LR primers.

Anybody have a need for these?

Those look like LEVER GUN cases likely originally topped with a 380gn WFN solid.

Should be great cases.

Got plenty, but thanks.