Count me among those frustrated with this cartridge, and I haven't even started loading cast boolits for it yet! I read as many threads as I could find, but I still have some questions.
I've done some successful loading with jacketed bullets in the past for this, and I've loaded bunches of cast in other calibers, but this one is causing me some grief.
I have three guns I want to shoot in this caliber. Slugging all three barrels a couple of times, I have come up with the following.
SIG handgun - .400
Beretta CX4 - .401
Kel Tec Gen 2 Sub 2000 - .402
So this is problem Number One. Given the high pressure of this round, am I asking for trouble if I size them all to fit the largest barrel, or do I need to very carefully size, separate, and load for each one?
Going right along with that one, I have a .402 die for my Lyman 450, and I see I can get a die for .401. But, the next size up is .406! Am I correct in assuming the Kel Tec is going to need to stick with jacketed rounds, unless I want to lead it up real bad every time? It is more of a truck gun than a range toy, but I still would like to practice with it for a reasonable cost if at all possible.
I have an NOE mold that is casting very nice looking boolits at 187-188 grains. It is labeled as .403. The boolits which are all straight wheel weights of unknown alloy, are dropping at .405 - .406.
Any advice will be appreciated. Well, most advice, anyway.