tacklebury,
nice lookin rifle, is that originally a BC or did you put BC stocks on a different rifle??
I bought the .223 barrel here on the Classifieds and it snapped on perfectly to my .45-70 BC frame and the forearm fits the same also.
WIN WIN!! Super accurate so far, although I want to do one more ladder. I got the best accuracy from 5 gr. Unique with the Winchester 46 gr. HP. I want to do a ladder from 4.1 to 5 gr now though, because I'm trying to keep velocities in the .22 LR range.
Best low power group (the bottom was a called flier and I'm not so sure #5 wasn't also):