I load a bunch of calibers; .17 Remington to .375 H&H and .45-70, plus common handgun calibers. It's so rewarding; analyze brass and targets, making a load perform where it didn't [or shouldn't, lol] before.
Using a timing belt, means you could have different case spools. . .better than varying torch placement for good temperature control. And once a combination is set, easily recorded and duplicated.