Dirty bore shooting

[Eric Johanen]

I've come to that conclusion too.. about .003 under bore to chamber in a fouled bore. KIK and OE are soft enough and hydrate well. From working with the tight chambered 44-77 I see that a bushing sizing die with several different bushings to match the bullet diameter is about the only way to get a nice fit with the brass. The bullet seats with a slight friction fit and does not require any crimp to hold them in place. With the .439 patched bullets I have to seat deep to just short of chamber mouth fouling. With Seth Cole 55y the bullet is small enough to clear fouling and can be seated a bit longer for more powder capacity. I'll be doing a lot of work this summer getting this worked out. Have just ordered a 45 cal. bushing size die for the 45-70 and 45-90.