Tried out my loads with 4350 today.  Averaged 1990 fps, need to come down a little more from 40.3 gr (Sierra estimated this to be around 1900 fps).  The grouping was about 3 times that of 4064.  Maybe I need to step up to CC1 250 primers instead of 200's for more consistent burn with this slow powder?????  250's seem to be the recommended primers on this forum.

On a side note - two sheriff deputies drove up to the range asking about a report of a black sedan driving around all suspicious like.  I offer to let them shoot the Krag.  They both hit a steel target at 120 yards.  They were both impressed with accuracy and mild recoil of a 116 year old rifle.  I think it made their day.