I've got a 6mm-270 WSM Improved in the works I was planning on slinging 115gr Bergers/DTACs from but a 130gr, even if it were only .650 BC, would absolutely STOMP most of the 6.5mm options available right now!
I've got a 6mm-270 WSM Improved in the works...
A 284 or 06 case has been known to DUST the Bergers, IDK on the DTACS a WSM based rig you might be careful with the rifling.
What are expecting to get out of that cartridge? I've got a 6.5-270 WSM and love it. A 6 seems like it would absolutely fly!