Firearm: FN Five-seveN
I have to be careful what I load for the 5.7x28mm. Handgun ammunition that fits the Federal definition of armor piercing ammunition is illegal to make.
Lee does not make dies for the 5.7x28mm cartridge, and it is unlikely that they ever will, aside from custom orders. Dies are made by Hornady, Redding, and Lyman. Of the three, I am leaning toward the Redding dies, which are only a few dollars more than the Hornady dies.