zrifleman,
I bought some Goex Express 2FG because I read some posts on the Shiloh forum where Rdnk stated he hunted with it and didn't need to wipe or blowtube between shots.
I tried this with 30:1 Paul Jones Creedmoor bullets from Sagebrush that I sized to .457 dia (my Pedersoli groove dimension @ chamber is .456). This load used 70 gr Goex 2FG Express and a milk carton wad.
With blowtube, borepigs or boresnake 5 shot groups of 2" This was almost identical as what I get with 67 gr of Swiss 2FG
Goex Express 2FG without any cleaning was 3 shots in 13"
I've got a Lyman 457132 mold on order. I could try the 457125 mold as this is what was recommended in the posts I read. I don't know if it would make a difference? Maybe there is a trick to shooting dirty?