Well if it is tight using Shockey Gold it should be fine with BlackHorn209. How was accuracy?

Something to check with Shockey Gold.. When your shooting it, look (from an angle) into the muzzle and see if you spot a white chalk like substance building up near the muzzle. That is probaby making the hard loading. And you can normally just swab the first couple inches of the barrel and the rest of the barrel will load fine.