Don't know about Marshall's loads, but I've used the "Hank Williams Jr" load for years.
That load is a mag primer, 21.0 H4227 and a 255 SWCL. It gives me right at 1000 fps from a 4 5/8" revolver. I have fired a few from a carbine, and did not chrono them, but they slammed the informal targets I used.
That load, BTW, pretty much fills the case right to the base of the bullet. I don't think you could get more (if any) under a heavier bullet.
That load is a mag primer, 21.0 H4227 and a 255 SWCL. It gives me right at 1000 fps from a 4 5/8" revolver. I have fired a few from a carbine, and did not chrono them, but they slammed the informal targets I used.
That load, BTW, pretty much fills the case right to the base of the bullet. I don't think you could get more (if any) under a heavier bullet.
