I have a pair of the Frontiers, one flint one cap.
Had the cap out yesterday, started with a .315 ball and .010" patch, 30 grs fffg.
At 50 yards 3 shot groups were about 3" with blown patches.
Tried again with .015" patches, groups shrunk to 1 1/2", with patches less shredded. Two shots of each group were quite close, touching in some cases.
Tried a .31 cal. Ox-Yoke felt wad between powder and .015" patch, much better patches, and the group about the same.
This is a fun rifle, the sights are dead on, and I'm looking forward to shrinking the group some more. I don't know that I'll shoot at a squirrel at 50 yards or not, but if I miss, it won't be the rifle's fault.
Time to try the flint version...............