I kind of figure shooting a 400+ gr cast bullet, the on target performance difference between a hot load running 1800-2000 fps and a "medium" load running around 1500 fps probably isn't much, excepting use against very thick skinned, dangerous game.
In the interests of saving my shoulder and wallet, I'm looking for loads in this range that use low bulk powders, just as a way to load something less expensive so I can get in more trigger time. Most load data I see is either heavy loads using slower rifle powders, or a few subsonic loads using low charges of pistol powders. Looking for something between.
These loads probably won't be used for hunting. Essentially I'll be blasting empty milk jugs with them for entertainment
In terms of casting, I'm planning on powder coating. Do you guys typically find that you need a gas check at these velocities?