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7mm- i personally dont have one but i was developed by Shawn Carlock,( big into longrange, wrote in the nz hunter reciently, from the US). he has shot quite a few animals out past 1200m with his....

thats only .07mm bigger than a wsm bolt face. you could do it on a savage action. or start with a 300rum case and blow that out. that way you can start with a standard bolt face. for example 338 Edge

just post pics when you do do it!

i say go for it. im interested. im just shooting my 7wsm in a long action to get over the short action problems. even just for the fun of doing it as a project and having something unique it would be...