I know a good toolmaker that can do an enlargement of the mold cavaties, That will be the next approach here between x-mas & newyear.

Next time I`LL add nitrowads...then change the charge...then use a different bulletlube..etc. One change at the time only to get a good grasp of the situaton. Then in the end..hopefully all shots will sit within handspread at 70 yards or so. Good enough for me. Minute of buffaloheart..

I don`t know how much a change in primer can alter a borerifles accuracy...but I doubt is much if anything at all. The BlueDot burned clean. No unburned powder were present. The brass looks very clean inside too.
The 60 grain BlueDot load were taken from an artical in 1996 GunDigest.