RE: KY. long rifle,what to shoot?
My .45CVA Kentucky has the 1:48 twist and shoots the TC Maxi-balls very well.
If you try this projectile, I'd start with abt 50 gns of FFF and work up.
I use to get almost 1600 fps with this slug over 66 gns of Pyro "P".
Cloverleafs @ 50 yds...
BP