OT: 375 Winchester brass....?

by Harry O-1, Saturday, January 24, 2015, 13:34 (3596 days ago) @ Gila Jorge

When I first got my .375 Winchester, I decided to weigh a bunch of 30-30 cases and a bunch of .375 Winchester cases. There was an overlap. The lightest .375 cases were lighter than the heaviest 30-30 cases.

The average for about 30 of each was 5% different. The 30-30 being 5% lighter (on average) than the .375 cases. Having worked in metal manufacturing plants before, I believe that they were probably shooting for the same weight, but the 5% was within acceptable tolerances.

For that reason, I would doubt that the 30-30 brass is half the strength of the .375 brass. I can readily believe that holding the reformed 30-30 brass to 30-30 pressures would be safe, but I don't know if it is absolutely necessary. Keep in mind, I have never done it, though.