Triple Seven first posted this on another site so i do want to give him credit...
Western Powders, of Miles City, MT is about to take modern in-line muzzleloader performance to yet another new level. At the 2008 SHOT Show in Las Vegas this coming February, the company will unveil an all new muzzleloader propellant that has been specifically developed to produce optimum velocities and energy levels with today's popular No. 209 primer ignition in-line rifle models. And it does it with lower peak pressure levels than produced by today's widely used 150-grain black powder substitute pellet charges.
The company's new Blackhorn 209 is definitely not just another black powder substitute. First of all, this propellant is a short-cut, extruded powder. And there is a small hole running through the center of each granule. This is not a nitro-cellulose based powder, but then again its not just another concoction of the same old ingredients of the very similar materisl found in other non-smokeless black powder subsititutes. As the powder comes to market, those who want to know will learn more about its chemical make up. Right now, let's just establish that it is non-corrosive...and different.
Like all other modern muzzleloader powders, Blackhorn 209 is bulkier than real black powder. In fact, a 100-grain volume measured charge of this powder actually weighs in at just under 70 grains. However, due to the exceptional uniformity of the granules, this is easily the best measuring muzzleloader propellant that has ever been available. And largely due to the unofrmity of the charges, accuracy is exceptional.
As with anything that's new, shooters will have to learn a few things necessary for getting optimum performance with Blackhorn 209. ne of the most important with this powder is to accept that IT IS A NO. 209 PRIMER ignition ONLY powder.
Here, at last, is a muzzleloader powder that truly permits the muzzleloading hunter to spend an entire day in the field, or week in hunting camp, without having to wipe the bore, whether the rifle was shot once or several dozen times. And on the performance side, the powder shoots with very consistent accuracy and impressive velocities. According to Western Powders, Blackhorn 209 produces those bullet speeds with a lower peak pressure than equivalent loads of Triple Seven. - Toby Bridges, NORTH AMERICAN MUZZLELOADER HUNTING
I assume it came off Toby's site...
http://www.hpmuzzleloading.com/
Here is the complete article...
http://www.hpmuzzleloading.com/SpecialReport2.html