Has anyone tryed this bullet in a mmp blue .355 .357 sabot in a 45cal 1-30 twist knight with BH209

I believe you can shoot that bullet with those sabots very effectively from a 1-30 twist. I am not sure what the powder load might be but would guess 100 grains of BH would work very well.
Here a couple of threads, where I have shot that bullet from a 1-20 twist 45. But when you read these keep in my mind I was trying to make things fail. The second thread does not have any information about that particular bullet, but offers some other thoughts.

http://forums.knightrifles.com/knigh...e-farm-t7.html

http://forums.knightrifles.com/testi...r-disc-t8.html

I have some and will give them a try and report back what up with this bullet and sabot