Years ago when most had bolt guns in 30-06 and surplus 4831 you could likely load a GI case full and get away with it. 5070 you could probably do it too in 30-06 bolt gun.With a slow enough powder, you can probably get away with that. Use something like A8700 or one of the milsurp powders used in 20mm ammo, and you can just about safely fill the case with powder, seat a bullet, and shoot it. I am not endorsing or recommending this process, but I know people who have done it.
Same with WC860 or 872.Years ago when most had bolt guns in 30-06 and surplus 4831 you could likely load a GI case full and get away with it. 5070 you could probably do it too in 30-06 bolt gun.