4064 showed some promise so, we did an OCW test,
One of the problems with this powder was at 37 grains it was going 3000 fps and we really didn't want to have that much speed because of barrel wear and we are loading in the winter, so in summer conditions this load would be well over max pressure
we test 35.8-37 grains and it was all over the place so it was showing signs of instability
35.8 .664 MOA
36.1 1.11 MOA
36.4 .432 MOA
36.7 .731 MOA
37 .882 MOA
We started getting away from the magnetto at this point when we wanted to try and shoot for groups. We figured it had something to do with weird harmonics being right at the muzzle.
