ALL 209' s are a lot more powerful than ANY No. 11 or Musket cap!! As a matter of interest, the old-time caplock rifle target shooters all contended that the WEAKEST caps gave the best accuracy. This would concur with the article you read. Some of them even built primer adaptors to allow centerfire primers to be used instead of caps!! Read Ned Roberts' book, THE MUZZLELOADING CAPLOCK RIFLE, if you really want to get some true insights into this subject!! However, since the vast majority of all fouling in a muzzleloader stems from the dirty characteristics of the various ML powders, I really doubt that the primer used has much noticeable impact on the amount of fouling produced by any given amount of powder!!



" It seems very difficult to impress most reloaders with the fact that every rifle is an individual, and what proves to be a maximum load in one may be quite mild in another, and vice versa." Bob Hagel, GAME LOADS AND PRACTICAL BALLISTICS FOR THE AMERICAN HUNTER, 1977