Tried some Montana Bullet Works 250 gr WFN today set at 1.210 today. First one at 9.3 gr and got about 1230 fps. I then loaded 2 with 9 gr. First one was 1173 fps and I ejected the second one to check for setback. It had a little gouge on the side if the bullet and had moved back about .005. I shot it and it went 1190 fps.

I think that it is going to be hard to WFN bullets to feed without set back. I wonder if not only the shape of the bullet but the bullet lube contributes to the problem.

I have Dave Clements Ruger Old Army 50 Cal cap & Ball conversion and the only way I could get the bullets to stay still under recoil was to wipe as much of the bullet lub as I could off the side of the bullets. I then would load it with wonder wads under the bullet for some extra lube.