For years I used nothing by Hartless & Scurvey (Curtis & Harvey)2F in all my rifles, but slowly changed to GOEX as the C&H sources dried up. The GOEX produced an average of 100fps to 150fps higher velocities for the same load, but it was a bit dirtier burning.
: Once we got into the ctg. rifles, mostly Sharps .45 3 1/4", then .50 3 1/4" then finally .50's on the .348 Winchester case, we were totally switched to using 2F and 1F in the big breechloaders, al of it, GOEX.
: I found in the .69 (14bore) English Sporting Rifle, 165gr. charges of 2F GOEX worked well on the B.C. moose, dropping to 82gr.(3 drams) 3F for target work & the trail walk. Sight leafs sighted for point-blank to 300 meters come in handy. For long range gong's, 125gr. 2F is all that's needed.
: With my switch to flint, I'm using GOEX 3F in .45rifle, .45pistol and .54 pistol.
: When the musket arrives, it will get dosages of 2F from 2 1/2 drams to 5 drams for various useage. I expect to use 5drams for hunting only, if it shoots well.
: I found with the 14bore rifle, 82gr. 3FGOEX gave good accuracy and just over 1,200fps. It took 110gr. 2FGOEX to get the same velocity, but long range accuracy was better, for some reason. Even the 165gr. hunting load only gave 1,520fps, but MOA + 1/2 accuracy to 200yds. All this, of course is with GOEX as that is now the only powder we seem to be able to ship in here.
: Some day I'd like to try that Swiss powder Ross Seyfried was talking about as he says it very nearly duplicates the Curtis and Harvey #6 of old. It's all in the charcoal used. The English used willow and the powder burned moist.
: I did go through 3lbs. 2f American Deadshot from before 1898(factory blew us) that a friend gave me. It was the best, most accurate, least fouling powder I ever used. I used it only for matches and won about every one I entered with it. Incredible stuff compared to 'modern' powder, yet it was far from the best of it's 19th century day.
Daryl