Never tried benchmark but I have found that my 12 vlp 204 doesn't seem to be very picky at all. BL-C(2) was the first powder I ever tried and every charge weight from 28 to 29.2 grains of powder shot .3's, .4's, .5's, .6's depending on the day. I settled on 29.2 grains using the Sierra 39 Blitzking. My OAL from the ogive using the lock-n-load comparator is 1.990" but it seems like it shoots little holes no matter where I seat the bullets. I once tried h322 when I was looking for a lower velocity, close range, night calling round. I went straight to 25 grains with the 39 sierra blitzking and shot groups in the .3's and .4's using that same 1.990" ogive OAL. These were all 5 shot groups.

The 40 gr factory v-max load is seated really deep and the last time I tried some of those at the range the gun put 3 through the same oblong hole.

Mine seems inherently accurate.