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Went out and ran a few chronograph tests on the old army revolvers today. Had a jug of pyrodex P and a jug of FFFG Triple 7. I normally shoot T7 but I saw pyrodex on sale for $14 so I thought I'd try it out. I don't shoot black powder usually because its hard to get at the store and it just plain smells bad to clean. Ran 142 grain balls cast from sinker lead and 220 grain Lee conicals cast from pure lead and Hornady cast 255 grain bullets. Had a couple of 335 grain hard cast gas checked to try as well. No grease over the balls and no felt. 7 1/2" Ruger SS fixed sight. Not fired for accuracy. Minute of can is fine with me.
142 grain ball 40 grain T7 1250 FPS avg. tight 15 fps spread. 493 ft lbs
220 grain conical 40 T7 spread all over the place 1189-1328 FPS . Triple 7 does not like being compressed.
220 grain conical 35 grain T7 1015 fps tight spread. 503 Ft Lbs.
255 grain Hornady with 35 grain T7 tight 17 FPS spread. 1000 FPS average .747 ft/lbBEST ALL AROUND LOAD
335 grain 32 grains T7 is all that would fit in the stock cylinders. 845 FPS. 532 Ft/LBs. Ive run these in my classiballistx cyinder before for 1100 FPS . Thats 900 ft/lbs.
Pyrodex likes to be compressed. For the balls I ran a full cylinder of poder and rammed it down with the ball
142 grain ball full cylinder pyro. very tight spread under 15 fps . 1230 fps for 470 Ft/Lbs
220 grain conical 40 grain pyro 925 fps. very tight spread. 417 ft lbs.
255 grain bullet 38 grain pyro 875 fps 433 ft lbs
142 grain ball 40 grain T7 1250 FPS avg. tight 15 fps spread. 493 ft lbs
220 grain conical 40 T7 spread all over the place 1189-1328 FPS . Triple 7 does not like being compressed.
220 grain conical 35 grain T7 1015 fps tight spread. 503 Ft Lbs.
255 grain Hornady with 35 grain T7 tight 17 FPS spread. 1000 FPS average .747 ft/lbBEST ALL AROUND LOAD
335 grain 32 grains T7 is all that would fit in the stock cylinders. 845 FPS. 532 Ft/LBs. Ive run these in my classiballistx cyinder before for 1100 FPS . Thats 900 ft/lbs.
Pyrodex likes to be compressed. For the balls I ran a full cylinder of poder and rammed it down with the ball
142 grain ball full cylinder pyro. very tight spread under 15 fps . 1230 fps for 470 Ft/Lbs
220 grain conical 40 grain pyro 925 fps. very tight spread. 417 ft lbs.
255 grain bullet 38 grain pyro 875 fps 433 ft lbs