Update--cleaned breech plug well...first shot Blackhorn209 & CCI209M....hangfire. Switched to Winchester 209 standard shotgun primers (blue box) next two shots --fired fine. I only had 3 charges made up (77grains weight, same as 110gr volume).... I plan to step up near the max (83grains weighed charges....About 118 volume) and see how she groups. I'll keep y'all posted if any hang fires with Win primers.

For what it's worth, Traditions tech support suggested trying different primers with the blackhorn to see what worked best in my gun. Blackhorn tech support--never responded, but their site says CCI209M & Federal209 have been the best primers for that powder.