That's just about how my 1975-vintage T/C Renegade shoots with its .54 caliber, 32" 1:70 Green Mountain barrel: .535 Speer ball (or a .535 ball from a Lee mold), .015 Irish Linen patch, Dixie's Old Zip Patch Grease, 120 grs. GoEx, CCI #11 cap.
(The original barrel is long gone, traded for I...