This came after seeing how dark the bore was and how the first greased boolit didn't look like it was going to work too well. It was only a powder pugg load into my test tube.
That's the inside wrap that survived whole. The outer wrap disappeared into dust. Even worse, note how uneven the rifling impression is! Clearly the boolit doesn't fit the throat too well. Anyway, I'm going to need to fire something like a hundred patched boolits through it to polish up the bore. Or I can cheat a little and fire-lap it first. The rifling is strong and the throat not oversize so just polishing is needed I'd say. I am a little concerned about the off centre firing pin strike and the canted boolit though. I might have to centralize the cases for fire-forming (this powder puff load couldn't even fill out the primer, let alone fore-form the case.