cont. from another thread. My .50 cal cva buckhorn used to shoot conicals well/ok, softball groups @ 75 yds with a peep sight. Now I'm lucky to get basketball size groups at 50 yds. It has a breach plug to use <a href='/tags/11' rel='nofollow' title='See all tagged subjects with: #11'>#11</a> caps I have never used gun primers or musket caps in it.I have shot a few sabots and powerbelts through it but it was a while back and don't remember how well they worked. "No plastic, shotgun primers,pellets, or scopes in Oregon for muzzleloader season". It used to shoot best with a 385grn maxi from a lyman mold with a 1/16 wool/felt pad. lubed with a beeswax, olive oil, lanoline mix, and 90 to 100 grns of pyrodex or goex 2f. Since it went south I have tried changing my charges,bullets,powder,etc nothing shoots very well except prb's with 40/50 grns powder and those were not great. I've cleaned it with copper brush,chroe boy,hoppes <a href='/tags/9' rel='nofollow' title='See all tagged subjects with: #9'>#9</a>,carb cleaner,brake cleaner,and a combination of all the above.I slugged the bore today with a great planes 385" I think" conical at 50.85 and 49.95 in. for .09 thou. "if I did my math right".I also did a T/C hawken @ .010 and a traditions deer hunter @ .011 if I did the process correctly. I think I felt a rough spot at about where the bullet would sit when loaded. Tried to look with a cheep bore scope but couldn't see anything different in that area, the bore looked at least as good as any of my other guns. Not sure what to try next. maybe some sabots or power belts to see if they will shoot better. Any ideas? Also haven't noticed any key holes in my targets. Thanks