6X45 Cartridge

[skeet]

I just bought a whole bunch of reloading items from a fellows estate. In the die sets there was a set of dies I can't ever remember hearing of. The die set was made by CH and in the caliber of 6X45. Anybody heard of this one. I can't remember hearing of it...but I surely don't know it all. Looks to be a pretty small case.... Maybe like a 223 case necked up to 6MM? Also go a set of RCBS 300 Whisper dies. I know of that one. He also had the bbl for the Contender so I bought the 300 Whisper BBL. Any info would be appreciated