I think H4350 will give you a little more velocity than Varget for same pressures. I did not see pressure at 37.7gr Varget and the 130 HVLD. This said, it is well above a book max load and the hybrid may have a little more bearing surface than the HVLD. I could not push the 135gr Berger Classic Hunter anywhere near as fast as the 130 HVLD.
YUP,.. H-4350 and StaBall 65, work Real WELL, in my 6.5 Creed. w/ 130's at, 2,850+ fps !
I skipped, the 130 gr. Berger, H-VLD's as they won't group, for Chit from,.. my Rifle ( About One MOA from, a SUB 1/2 MOA Rifle ! ) FOUR Tries, so far and still,.. NO Luck with, them !
130 gr. ELD-M's and StaBall 65 for,.. Me !!! ( 3 shot,... "Clover Leaf's" ! )
Hogdon has StaBall 65, Data for, the 6.5 x 47 ,. me thinks !
Varget is, too fudging, EXPENSIVE, anyway,..
Unless, you're a very Dedicated, BR shooter