I slugged the bore of my Krag again (that makes about eight times) and I keep coming up with .3095. I tried .309 jacketed bullets and they were coming out sideways. I just bought a batch of .312 cast bullets (160 grs) and sized them down to .311. I only loaded 10 rounds and they all chambered and fired, but I made the mistake of trying to test out the load (27 grs H4895) AND set up a new 1903 front sight. I should have just fired to see if they grouped but I kept adjusting the sight. Of course the holes in the paper were all over the place but at least they were nice and round.
I loaded up a dummy round using the .312 (not sized to .311) and it chambered fine. If it chambers, it should fire - correct?