Sounds good. I like buying you, Brian, this way everyone in happy. Dillon gets there cut, brian keeps the forum up and, the nest part, I have Dillon stuff!!!
I have been trying to keep with unique, because you powder will pour out of a 9mm long before you could ever over charge it. Fine for plinking, and most any round.
Back in the 90's I was trying to buy a bar, I wanted to make a beer and pizza joint with a Military theme. Now I use the name to sell surplus on line to make some extra money, not enough to quit the day job, but it helps to pay for my shooting addiction. I also use it for my on line gaming.
What I did to find max oal for a firearm, was to take a properly size case cut it lenght wise on one side. You can then seat a bullet high. Chamber it, it has enough give to push the bullet into the case at max oal for the chamber. I would drop it down a hair so your not sitting on the rifling. Then measure. After that you can use that same test round for function and mag fit. And the bullet comes out ez for the next test.
My collection is mainly WWII but I do try to get an Infantry weapon from every U.S. military era. The oldest is my brownbess. I have a (repro) zouave and 1851 navy to cover the civilwar. Many more, mostly rifles. One thing to remember when collecting, is keep to your original plan because it can grow into a monster.