I'm a bit in between, with 48 or so military calibers. I'm set up to load for all of them except the 8X56 Austrian. The 314299 mold does cover a lot of ground here.
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I'm not a big shooter so my requirement is to locate a minimum of one box of 20 rounds per caliber. I have reloading dies for a lot of the more common oddball stuff like Arisaka and Carcano but the really weird stuff is probably just going to be the box of the ammo.
My shooting I'll stick to the easy to come by stuff, commercially available which does take care of quite a bit of the collection.