Anyone familiar with any of the various .30 cal wildcats based on the 6.5 Grendel case?

I recently picked up a decent amount of Hornady .308 Arrow brass (around 220pcs), which appears to be nothing more than a 6.5 Grendel necked up to .30 caliber. Hornady wasn't able to tell me anything about the brass, even though they were the ones who manufactured it (its actually stamped "Hornady 308 Arrow"). I am somewhat familiar with the individual who sold the round, its a now defunct company out of middle Georgia (Arrow Arms) who sold AR variants in .308 Arrow and .243 Arrow...with the .243 Arrow was nothing more than a renamed 6x45.

Looks like there are some other variants of .30 cal Grendel wildcats, and I thought it would be a fun round out of a 16-20" T/C Contender carbine (with 110-130gr bullets) or even a 14" pistol. Of course, finding a reamer or reloading dies makes it realistically not viable financially, so I will likely just anneal all the cases and reform to 6.5 Grendel.