Hey everyone looking for advice on what you all use for powder charge increments when developing a cast boolit load in surplus military calibers. I’ve shot plenty of cast boolits thanks to a kind uncle that supplies me with his boolits and load data. Now I’m looking to experiment on my own. Specifically 303 British, 7.5 Swiss 30-06 and more. Powders on hand are 2400, Red Dot, 5744, Unique, re 7 and more. With jacketed loads I typically go up by .5 grains