I have three Whites. Their favorite load is 80 grains of Triple Seven 2f and a 460 or 495 grain Bull Shop conical. I have used wad and find that with or without, the rifle flat out shoots. Is there a reason you want to push the rifle that hard? 120 grains of powder is more then doable, but the recoil could be a little stiff. With 80 grains there is no whitetail, I don't care how big, going to take a hit from that.

My .451 likes a 460 grain bullet and 70 grains of T-7 2f.

Redclub shoots his White with 100 grains of T-7 and a 460 grain I believe it is. And he's shot elk with it. Also he's shot open sights peep out to 200 yards with it.

You got a great rifle and if Doc says it will be a shooter, you can take that to the bank. In the past, when he sends you a rifle, he sends a target and a load the rifle liked.