You are discovering part of the fun of playing with the older Wildcats. I have had a few old odd balls myself including 30 Belted Newton, 348AI, 22 Kilbourn Hornet, and often hunt with a superfast 338 Wildcat of my own making.
To answer a question you asked, you can form cases rather easily from 6mm Remington, 257 Roberts or 7x57 Mauser. Any will form down and be useable with just one pass through the correct 25 Roberts Die.
It is fun watching you go through the learning and understanding phases of this cartridge like I have done with a few rounds in the past. Enjoy the whole ride, sir. These kinds of rifles and experiences do not come along so often these days.
LOVE God, LOVE your family, LOVE your country, LIKE guns and sports.
About 2016 team "R" candidates "We definitely need a crew with a sack of balls the size of hot water bottles, bloviated estrogen leaking feel-gooders need not apply." Gunner 500
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