.... makes you wonder what it’s like to reload a cartridge that small ...
Probably not much different than a 380 Auto.
Guess will have to use the Armscor ammo for starters. Looks like 20 bucks for a box of 50.
Really high chamber pressures on the 5.7 - the max is 50,000 psi and yeah, you read that right. Either you're really, really careful with the powder or you really, really trust whoever is.
I got a bunch of 5.7 handloads as a present. My benefactor called me later and said I'd need to put some case lube on them BEFORE I fired them. Wha? sez I. Oh, it's laquered at the factory, sez he, so there aren't any failures to eject. He put them into a tumbler to make them nice and shiny, which they aren't in the box, and that's why. Hmm...
Sure, they can be handloaded, and if you're careful it'll be fine but if you're a little uneasy about the whole thing as I am, maybe better to purchase factory ammo. If you can find it. Sheesh.