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Thanks guys. No, as said nothing fancy literally unscrew the old tube and replace with a slightly longer one in 243 1:7.5 or 6.5x47 1:8. No paint​, flutes, bells or whistles.

Just playing with the idea of rebarreling my Mod7 243 to a fast twist 6mm for 105gr vlds or maybe even 6.5x47 (a caliber I've always wanted to try).
I see what gunworks charges on their website but...