Statesrights, if you want to wade through it might have a look at this thread:
(You need to Login or Register to view media files and links) Been a while since I sat down with this rifle but I shot it at the Quigley my first year there.
The load I settled on was 22.6gr of 4198. After reading Sherman Bell’s testing articles I decided this was the burn-rate I preferred. It’s kinder to your old rifle than others, including Black Powder.
I do seat a Walters Wad at the base of the bullet and transport ammo nose-down for that reason. My groove diameter allows a tight fit of the wad so that is just a precaution. Were I shooting 5744 I would eliminate the wad all together just to be on the safe side.
22.6gr IMR 4198
360gr bullet (edge of stability but remains stable out to 805yds)
.405 brass (neck-turned to allow .001 over groove size bullet).
WLR primers
Velocity 1362fps (10-shot average that particular day). ES=39
Accuracy notes at 100 yds: 8 shots @ 7/8”, 2 (in same hole, high and right of core group) for 1 1/4” overall.
However, the only picture I had was a five shot group with another load and slightly different velocity.