Hellboy Samaritan barrel split reworked and fixed

Tried printing the original JersyBeast's excellent Good Samaritan prop, http://www.thingiverse.com/thing:582501
But too much support ruined the barrel. So, I found sirfrog's barrel split and tried that instead.
https://www.thingiverse.com/thing:1828293
Unfortunately, the upper barrel wasn't good, due to some messed up geometry in the rifling, and a few other places. You can see it in the pictures.
Rebuilt the inside of the barrel entirely, and the breach facing end, and cleaned up the other