You can easily load RB's in smokeless shotshells to exceed 1,500fps. You can find hese laods in several shotshell handboks. In the Muzzleloading 12 bore, you won't like the recoil as it takes roughly 190gr. 1F to get that much vel. and this load might be unsafe for many 12 bore ML smoothies.
; Actually, with 1F powder, the 190gr. load was the standard for 12 bore in Africa in both the Paradox and ball/shot guns. They had slightly heavier barrels than common shotguns, however I shot that load in my double-gun without problem - it just kicks like H!!!but shot well. The "light" 12 bore load was 150gr.1F. The 150gr.1F load gives around 1,350fps.
; NOTE - they used SINGLE "F", NOT 2F.
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Daryl...You may find it interesting that I recently experimented with my 20ga "break open" single bbl using the following method.
Using a .54cal Lee REAL,(320gr...I think), and 62gr Goex Cartridge. I loaded the Win.AA casing with the Black Powder, I cut a "Cheddite White" plastic wad to the same length as the Lee REAL, (and then cut 1/2 it's base off). Loaded the Lee REAL in the wad, Seated the REAL and Wad using ~30# seating pressure, then crimped with a "star" crimp........yooolia! I had myself a smoothbore "cartridge"...of sorts.
Or perhaps more of a smoothbore "sabot". Anyway,
I "made paper" 3x out of 5, at 50, and then I chickened out. No clue as to what the pressures were, no clue as to what the velocity was, but the recoil was terrible! The recoil made my quit. Figgured I better quit while I was ahead, and before something went South on me.
I DO NOT recommend anyone try this, unless of course they know "exactly" what they're doing and what to expect.
Everything may have been perfectly okay, but then again, I may have been playing with fire. I'm not sure. It was pretty much a fool thing for me to do w/o any knowledge of what to expect. But it was darn interesting!
Daryl, do you, or anyone, have any knowledge of the procedure I described? If you do, I would love to hear a few comments on the subject.
I certainly don't want to hijack this thread, but if anyone knows anything, would you come forth?...in a new thread, and let's talk. I think this has merit, but I would like some advise before jumping in over my head.
Respectfully, Russ