Just an update
I ended up with 3.180 COAL (.02” off lands)
Imr 7828ssc
64gr
3055
3064
65gr (Pressure sign)
3172
3109
Magpro
67gr
3000 average 10 shots
.5” at 100 5 shots
.9” at 200 5 shots
68gr
3060 average 6 shots
.5” at 200
69gr
3127 average 2 shots
.5” at 200
70gr
3177 average 2 shots
1”...