I only have experience with two wildcats, 338-06 Ackley Improved and 30 Herrett. I recently acquired a Contender G2 carbine from a friend’s estate. It is chambered in 6.5x50R Bellm. I have ammunition formed from RWS 5.6x50R Mag and new brass. I also have is pet load recipe. I have dies that he labeled the box as for the Bellm, but are 6.5 TCU dies. I can’t see where these dies could be used to resize this brass. For those that reload this cartridge what dies do you use? Where did you acquire them? Are there any good sources for others load data? I cannot find any on Ammoguide or load data sites. Any information would be greatly appreciated.

I would reach out to Bellm:
https://bellmtcs.com/

Thank you. I sent them a message late Friday evening as well.