Does anyone have any load data on this, the first belted cartridge? I have dies and know how to make brass but the data I have found shows a .371 bullet! I cerosafed the bore and it is .371, Do you think it would be a problem shooting .375s?

The only loading data I found is a 270grs Spire befor 42grs IMR3031. The bullet diameter is .371". I don´t know, if you can use the .375 bullets.


Martin