I just bought 1,250 LC cases once fired from Kaleo Arms, came in a nice .50 ammo can, too. Very nice looking brass. They actually sent me 1,279 cases (I think they just fill the can to the brim and call it good). Took a while to decap, size, trim, swage (Dillon Super Swager), and uniform all of that but now I have a good batch of "perfect" cases. You can get totally prepped once fired bass for about $135/1,000, or buy non-military commercial once fired for around $90/1,000.
