Not quite die cast but once I get a reloading set up there will be some dies involved. I have always been into guns just for the mechanical aspect of them and they are fun to shoot as well. Never been a big hunter unless you are talking about going after clay pigeons. But anyway I have been keeping a few spent shells from the guns the family owns. Right now it isn't much and fits on my monitor stand right now I have from left left to right. 30.06 from my oldest's rifle, .223 from I don't know where, a 7.62 x 39 (AK 47) that was in the center console of the 86 z-28 we sold to our nephew, 2 40 Smith and Wesson from my wifes new gun, and finally 2 9mm.
Going to add some more later 12 and 20 gauge shotgun, 22 LR and hopefully 22 and 22 short, .357 Magnum, .38 Special, Some weird Makarov caliber, and maybe some .45 ACP.