1f - looking back over your post, you mentioned milk jug tests - what did you find? I'm curious how the Partition faired. I shoot 63 gr AA 4350 under a 180 Partition for 2925 in my 24" SAUM. It is my elk load.
Another question - does either of your two SAUM's leave ejector marks in any of your cases? My 7 does at the mildest loads possible but nice rounded primers, and next to no case head expansion. In fact, its hard to measure any case head expansion.
Milk jug test:
7mm 140 gr BT
Velocity = 3200 fps
86.5 gr, .50 dia, 62% retention
7mm 160 Partition
Velocity = 2950 fps
106.3 gr, .53 dia, 66% retention
.30 cal 180 Partition
Velocity = 3000 fps
122.3 gr, .56 dia, 68% retention
.30 cal 180 Accubond
Velocity = 3000 fps
115.5 gr, .59 dia, 64% retention
.30 cal 168 TTSX
Velocity = 3150 fps
118.6 gr, .40 dia, 71% retention (lost all 4 petals)
I was getting injectors marks with IMR4350, but I had those loads were max in my rifle. I am not getting injector marks with RL17 yet and the velocities are greater than the IMR4350.
Like I said previously, I know I can get even more velocity out of the RL17. I think 3200+ fps is going to be no problem with the 168 TTSX with the .300 SAUM.
