You are asking to cover a large difference in powder capacities. The 357 is going to take a much faster burning powder than the others. For the 30-30 , 35 Rem and 308 you MIGHT get by with IMR 4064 or a similar burning powder. These are popular cartridges, but even they vary quit a bit in pressure levels and powder capacities so the same powder will give you varying results. The 357 is much smaller in volume. I can not see a powder that will cover it and the others. By the time you buy reloading equipment, brass, powder, primers (small pistol for the 357 and large rifle for the others), bullets, etc you might be better off just buying loaded ammo and lay it back. If you think 1000 primers will last you, that is 250/round. But if you only use it for hunting and checking your scope for each season - a 100 rounds will last a lot of seasons. There are several people that have had 20 rounds last them for 5 years or more. One shot before the season to check zero and one or two shots during season. I work with a guy that has a 22-250. He does not reload, nor does he need to. He shoots ground hogs (woodchucks) and you just do not get that many opportunities around here. He may shoot 40 rounds a year - tops. If you plink with the 357 lay in some extra for that one. 357 will be your cheapest ammo to buy. Reloading really saves money, but only if you are going to be doing a lot of shooting. It can be a fun hobby, but if you are doing it to save money - you will only do it if you are going to be shooting a high volume. Good Luck and Good Shooting