Long barrel .50 Alaskan: need slow burn powder recipes

[Ol' One Shot]

I'm just not finding much help with load data for my new 1875 Sharps. I know the .50 Alaskan is not optimized to a 30" barrel, but I figured 26" would be a good compromise. Most loads I see are fast powders like RL7, that will run out of steam before exiting, so the final six inches or so becomes a friction brake. Anybody got data on somewhat slower powders, to help realize my gun's potential? Frankly it just never occurred to me before I ordered the gun, that most 50AKs are Contenders or carbines.

[Nobade]

Just like 45-70, something like IMR3031 should work well.

[44MAG#1]

This should be interesting.

[HWooldridge]

This is from Wikipedia: "Harold’s favorite load in the .50 Alaskan was 51.5 grains (3.34 g) of IMR-4198 with a Barnes 400-grain (26 g) flatnose, jacketed bullet for about 2,100 ft/s (640 m/s) and just under 4,000 ft⋅lbf (5,400 J) of muzzle energy.["

[rintinglen]

I have to say that my days of shooting hard kicking guns are in the rear view mirror. But were I to lose my mind and subject my worn shoulder to that level of abuse,;) I would look at Varget if I could find it. With a boolit like the Accurate 50-430P, I would start at 45 grains, and work up until I got around 2100 fps. I would double lube my boolits, using a good lube like Ben's Red and then giving the boolit a pair of light coats of LLA or BLL.

[BLAHUT]

You could try Blackhorn209, or FFF substitute, or buffalo substitute, with mag primers, Blackhorn209 works great in my 45/70 with a 500+bullet and 30" tube, very accurate out to 1000+yds, works great in my45/60, both at about 1200FPS or a tad less.

[BK7saum]

Hodgdon online load data for a 22" barrel utilize H4198, Benchmark, and H322

Max pressures are kept at 35,000CUP with velocities in the 1800s for 500 and 525 grain bullets.

[BK7saum]

Also, looking at load data from handguns and rifles/carbines with pistol cartridges, the higher velocities in handguns is almost always the higher velocities in the rifles or carbines.

I really don't think you will see any adverse velocity effects from the "normal" 50 alaskan powders.