I finally got some loads worked up for my 22-250, started with 34 grains with a 55gr Sierra at .005 & .010 off, both groups were 1/4 inch at 100yd. The primers were a little flat even though it wasn't max load.
You wish mjmcmahon! That is by far the best powder I've found thus far! The new 4200 is awesome too!