I've tried this, but the sucess was at best iffy.
Heres the trick, try to get as much powder in as you can. Then try to add a bit more..........., then some more......
Theres no way you can duplicate the original load as it was a solid pellet dropped into the case before the neck was formed. (Imagine a factory doing that today)
Long, very long, drop tube, shake vibrate & so on to settle as much as possible. Top up case & seat bullet. I got about 38 grains in, but the original was 43 IIRC. Gas check? You won't need no steenkeen gas check! the 215Gr load was about 1850 FPS IIRC & you may get 1/2 to 2/3 that.
DO remember to clean for B/P afterwards.