I'd say the best the 93Jimbo would do with 286gr projectiles is 2100 fps, and perhaps 2,200 fps with newer optimized powders. CFE223 might be a bit slow but worth a shot. I don't have any experience with 2000-MR, but these are the types of powders to try. IMR-8208 XBR would be good as well as Ramshot TAC and Exterminator.
