Yes, they will shoot BlackHorn 209 just fine. I was shooting mine with the last of my second jug. Now I have to just shoot off all the other powder I have around the house.

Like I said, that ramrod is a PITA but you can load with it. And since that is all I ever use a gun's ramrod for, that is not a problem to me. I always use a 34 inch stainless steel range rod for loading and cleaning.