If you want Blackhorn 209 powder talk to the manager at the Cabela's near you.
I have been in 3 of them and when it is in stock all 3 of them carry it but it flies off of the shelf fairly quickly depending on the time of year.
If you were near me I'd give you what I have left of it, at least one full bottle and another quarter of a bottle.
I just can't get my ML to shoot it.
Jim, perhaps your issues have to do with proper ignition. BH209 has issues if the bullet is driven off the powder before the powder fully ignites. Lot of accuracy problems associated with that. I have been using Fiocchi primers in my 209 muzzleloaders. It has a "softer" ignition.
If my memory serves me correctly that problem can be identified if there is a very tiny delay between the primer sound and powder ignition. It is kind of like a VERY short "hang fire". When that delay is nonexistent and my rifle just goes off instantaneously, I get my best accuracy.
There was a guy (Russel Lynch I believe was his name) who did a video evaluating primers. He used a ramrod with various 209 primers measuring how far the primer drove the ramrod with the barrel held horizontal and level. The Fiocchi moved the rod the least, yet it is hot enough to reliably ignite the load.
There is also a guy named "Carlos" who's big in the muzzy circles. He was championing the Fiocchi primers at one time.
With that said, my Remington/Brux sabotless used Federal 209A primers but that jacketed bullet is more substantially seated on the powder.