In all fairness to FG, I really don't see pellets as the issue. I think (and I might be wrong) what Frontier Gander was trying to show by using pellets is.. they are commonly used by a lot of muzzleloader shooters. While I also like loose powder as I am sure FG does with results like BlackHorn 209 there.. shooting off the shelf powder in pellet form and power belts ... its very unfair to then announce that this bullet does not shoot well out of this rifle. Perhaps later down the road, the same test could be conducted with loose powder.
I have conducted similar tests using loose powder with rifles and the results are the same. Some rifles just plain hate some powders. Also 90 grains of this powder might produce accuracy, while only 80 of another is needed.
This is a game of test and test again. Try this, that and the other thing, and it can get expensive. Back before inline rifles and how many different brands of powder, shooting these rifles was a lot easier. Most all of the rifles on the market shot roundball pretty good, there was black powder and Pyrodex which are very similar in behavior, so all it was to shoot well was learn the load the rifle likes, and then practice. Today's gun are much different.
In today's gun market there is a urgency to shoot faster projectiles. We develop better burning powders, pellets, even breech plugs. And we all know the advancement in projectiles. What they have turned us into is a bunch of custom loaders. Anyone that's ever hand loaded cartridges for that special long range centerfire rifle understands this. It has to be this brand of powder, a certain amount, the primers are even considered into the mix as the projectile. Well we have done the same with muzzleloaders.
I have never seen (other then one dirty dog on my shelf) a muzzleloader that I could not get "hunting accuracy" out of. And again, even that level of accuracy is subject to argument. 50-75 yards is more then accurate to me for where I hunt. Yet some of you push for the 200 yard mark. Its all custom tinkering.
This was an excellent test FG. I liked it. If powerbelts were not so darn expensive, I would do a lot more shooting with them. Currently I am trying to move back to an all lead bullet I can cast.