Hey folks, I have some 348 cases ready to form up to 11mm for my gras rifle. once they are formed I'd like to get this thing shooting some lead, the only problem is I don't know what size bullet to use!
The rifling appears to be in good shape, just rusty because this came out of that RTI Ethiopia cash, Id wager that the bore isn't much off from original spec.
Unfortunately I am unable to slug the bore, I don't have any way to drive a slug in. I can run by Walmart if need be and try to find the proper size fishing weight and maybe drive it in the muzzle a tad and back out with an old cleaning rod? I did something similar with a Carcano and got a good measurement.
If any of yall gras loaders could chime in that would be great. I'm currently seeing bullets from .439 to .446 and am at quite the loss.