Took my Pedersoli Blue Ridge in .54 (39" barrel, 1 in 65 twist) percussion to the range yesterday and tried 3 different powders, Swiss, Goex, and 777, all 3f. Used .015 linen for my patches, except where noted when I used .020 pillow ticking, which gave about 50-60 fps faster using like charges. Fired 5 shots to figure the average for each load, thouroughly cleaning the barrel between 5 shot strings. All PRB's were Hornady .530 balls. This rifle has always been a tack driver, and all the various loads strike at nearly the same point of impact. Pic attached is a 100 yard target I used for aligning my shots over the chrono, and while not shooting for groups, I am very pleased with the results! Top group (20+ shots) is the conical impacts, bottom group (also 20+ shots) is the PRB impacts. I have owned this rifle for decades, having purchased it when they were readily available for about $239 new. They are slightly more now! I did not shoot conicals with 90 gr. charges of 777 or Swiss, as I like my shoulder where it currently resides, and don't need a broken wrist on my rifle. Just for info, the chrono results very nearly match my chrono data for my Pedersoli .54 Rocky Mountain Hawken (34" barrel) they are within shot to shot variation using identical loads.
75 GRAIN SWISS PRB. .015 linen
1670 avg. very consistent ext. spread 32 fps
90 GRAIN SWISS PRB .015 linen
1885 avg. Ext Spread 24 fps
90 GRAIN SWISS PRB .020 pillow ticking
1944 fps. Ext. Spread 11 fps!!
60 GR. SWISS PRB .015 linen
1492 avg. Ext. Spread 22 fps
60 GR. SWISS CONICAL LEE 300 GR.
1423 fps. Spread 57 fps
75 GR. SWISS LEE 300 GR. CONICAL
1540 avg. extreme Spread 19 fps
HODGDON 777 75. GR., LEE 300 GR. CONICAL
1558 avg. ext. spread 103 fps
HODGDON 777 60 GR. LEE 300 GR. CONICAL
1370 avg. ext. spread 66 fps
HODGDON 777 60 GR. PRB .015 Linen
1395 avg. 15 fps spread
HODGDON 777 75 GR. PRB .015 Linen
1650 avg. Spread 51 fps
HODGDON 777 90 GR PRB .015 LINEN
1841 fps avg. 44 fps ext. spread
GOEX 90 GR. PRB .015 LINEN
1653 avg. 52 fps spread
GOEX 75 GR. PRB .015 LINEN
1510 avg. 27 fps spread
GOEX 60 GR. PRB. .015 LINEN
1335 avg. 76 fps spread
GOEX 60 GR. LEE 300 GR. CONICAL
1275. Avg. 47 fps spread
GOEX 75 GR. LEE 300 GR. CONICAL
1390 avg. 65 fps spread
GOEX 90 GR. LEE 300 GR. CONICAL
1586 avg. 56 fps spread. (Recoil harsh!)
75 GRAIN SWISS PRB. .015 linen
1670 avg. very consistent ext. spread 32 fps
90 GRAIN SWISS PRB .015 linen
1885 avg. Ext Spread 24 fps
90 GRAIN SWISS PRB .020 pillow ticking
1944 fps. Ext. Spread 11 fps!!
60 GR. SWISS PRB .015 linen
1492 avg. Ext. Spread 22 fps
60 GR. SWISS CONICAL LEE 300 GR.
1423 fps. Spread 57 fps
75 GR. SWISS LEE 300 GR. CONICAL
1540 avg. extreme Spread 19 fps
HODGDON 777 75. GR., LEE 300 GR. CONICAL
1558 avg. ext. spread 103 fps
HODGDON 777 60 GR. LEE 300 GR. CONICAL
1370 avg. ext. spread 66 fps
HODGDON 777 60 GR. PRB .015 Linen
1395 avg. 15 fps spread
HODGDON 777 75 GR. PRB .015 Linen
1650 avg. Spread 51 fps
HODGDON 777 90 GR PRB .015 LINEN
1841 fps avg. 44 fps ext. spread
GOEX 90 GR. PRB .015 LINEN
1653 avg. 52 fps spread
GOEX 75 GR. PRB .015 LINEN
1510 avg. 27 fps spread
GOEX 60 GR. PRB. .015 LINEN
1335 avg. 76 fps spread
GOEX 60 GR. LEE 300 GR. CONICAL
1275. Avg. 47 fps spread
GOEX 75 GR. LEE 300 GR. CONICAL
1390 avg. 65 fps spread
GOEX 90 GR. LEE 300 GR. CONICAL
1586 avg. 56 fps spread. (Recoil harsh!)