For anyone wanting to use 7.62x39 brass with 264LBC

[45r]

The 264 LBC has a tighter neck and some 7.62x39 brass might need to be neck turned to make sure you have enough room for bullet release.
Forster makes a hand held tool for this that works well and isn't very expensive.
I put the brass in a cordless drill and do around 20 at a time.
It evens up the neck thickness and usually improves accuracy.

[45r]

Turned the necks on my fire formed Lapua 7.62x39 brass with my Forster neck turning tool and loaded some 95 grain Vmax's over 28 grains Viht-133.
Only shaved a little off the bottom part of the neck mainly.
They shot around .65 inch 7 shot groups from my 264LBC.
Every load I've tried shoots sub MOA.
My 264LBC and 65 Grendel is shooting half inch with 123SST's.
Ready for woodchucks.