Sort of off topic but not quite. I shoot a 7 mm Mashburn and the thought of lost ammo and no commercial available has crossed my mind until..... I ran into 2 guys at my local rifle range. They were shooting a 7 Mashburn one of them had inherited from his grandfather. It was a very nice custom from the early 60's likely. Their ammo of choice was factory 7 Rem. They got it sighted in and were happy. The brass had a VERY short neck and no telling what the velocity was but it would probably have killed a deer to maybe 250 yds.

I guess any port in a storm smile