My .54 swamped, is the best barrel I have owned. It has shot consistent groups since the first day I loaded it, no break in at all. I'll have to look up the ball size but it is over 80 gr of 2F.
My 54 Cal PA Mountain Rifle built by York County Master Gunbuilder Brad Emig has a PA State based Colerain Barrel Co. crafted barrel w/6-groove, round bottom cut rifiling, .016" deep. The rate of twist is one turn in 56". Barrel is a "swamped" (or tapered and flared) octagonal barrel. Precision crafted to closely duplicate the original barrels of colonial America.BenJr said:Anyone have experience with colerain barrels. Looking at one in .54
Curious how accurate & load combinations used in the 1 in 56 twist barrel.