James,
Funny you mention the "drool". I was just going back through this thread and admiring that lot WC 1-1 XM257 can. That's one I'd sure like to own, too. Very nice.
The Woodin Laboratories collection is basically the life's work of Bill Woodin in Tucson, and is the world's largest collection of police and military small arms ammunition up to 30mm. For anybody interested in ammunition, a visit is one for the bucket list. The variety and depth of the collection is amazing with many unique and "sole survivor" specimens. Nearly as amazing is the amount of knowledge about rare ammo that Bill has in his head ready for instant recall. Truly the original Guru of of cartridge collecting.
A quick example.......on a past visit there, I wanted to see what variations he had in German rifle grenade launching cartridges, as grenade launching stuff is another interest of mine. I have struggled to gather up maybe 6 or 7 various WWI and WWII types over the years. Sliding open a 2 1/2 foot square drawer revealed perhaps a couple hundred different types. Kind of leaves you with that......why do I even bother?.....feeling about your collection.