These are my 6x47 Lapua loads in a 21 1/2" long 14" twist, all moly plated, so take that into consideration.
I have an old lot of GI-322 powder running 36.4 grains with 70 BT's at 3500, with 7 1/2 primers in Lapua brass.
42 grains of Varget with 70 BT"s at 3700, with 7 1/2's in Lapua brass.
I did a bunch of experimenting with Lapua 308 large rifle primer brass with the shoulder pushed back, and necked down.
In head to head comparisons, the LRP slightly out shot the SRP brass.
Go to load is 40 grains of Varget at 3500, with Fed 210's in the 308 brass.
41.5 grains of R-15 at 3625 with 70 BT's, with the 210's in Lapua brass shot pretty well too.