Black Powder in 357 magnum cases???

[Old Ironsights]

Pretty much the perfect "rook rifle" cartridge.
Do rifle length barrels need a lot of lube for the black?

No.

One of my 20" 1892 "catsneeze" loads was something like 10gr of 4F under a tumble-lubed 180gr keith.

[bigted]

well i just figured out how to remove all the parts n cylender on my gp100 ruger so LOOK OUT BP. im on it and as soon as i get a good mould ill let fly with some bp in the .357 case outta a 6 inch barrel.

[Smoke-um if you got-um]

The double end wadcutters can also be loaded longer in the case to increase powder capacity if you should want clean holes in the target.

Mike

[nwellons]

It may not be relevant but I have done a lot of research loading the Russian 7.62 Nagant revolver cartridges with BP and have found that primers make a very big difference. I have compared small pistol, small rifle, magnum small pistol and magnum small rifle primers. The magnum small rifle primers are the only ones that give a consistent velocity.

This may be due to the very small diameter of the cartridge but I got the idea from experts who recommended magnum primers to me for my .42 Berdan cartridges.