Varget and 35 Whelen

Using a 250 Grain Round nose I’m finding my 35 Whelen is doing best between 54.0 and 54.5 grains of Varget with Remington 9 ½ Pr.

Question:
You gentlemen, who use Varget and similar weight 250’s I’m Curious of how many grains (Varget) you use to get your sweet load?

Thanks,
Vg

35 Whelen Custom Springfield 25.5" 250 Hor RN 2550 fps Varget 55 CCI 200 REM 3.355 OAL Group@100 1.1"