I just had a flash in the pan idea and wanted some input from the "intellects" on here.I have a Vari Flame adaptor from PR that I used to use w/T7. 5 gr of T7 fills the cup area of my Omega BP flush w/the surface.I'm thinking that since I know a SR primer will reliably lite T7,5gr of T7 should lite Blackhorn. A duplex(sort of)......5gr T7-100 to 115gr of BH. Using SR primers I never had to drill crud from the flash channel as w/209 primers.I plan on going the LR primer route from PR but for the time being thought this may just work.