That STW is just perfect for that long tube. A 7 RUM might get you some speed gain, but I think you've got a great round, and with heavy bullets, pretty different from a run-of-the-mill 7 Rem.
What's the guy making the long VLD's Ciarct.. something? Heavy match bullets don't really need to fit in the magazine. Maybe get the throat tapered out to seat your favorite, and then find a hunting bullet that will handle the jump (if you're trying to do that with this thing.)

You might PM Tim-in-TN about his experience with the 7mm/338RUM. He has one and is building several more as the performance is excellent. I'm sure he'll be happy to share his experience/data with it.

Bwana-be

Is ? there someone making a VLD in 7mm around ?
I could never find a market for them .
There great long range shooter's

You also wrote : Maybe get the throat tapered out to seat your favorite Yik's Grrr you rifle butcher you Gezzzz why not have the guy try the
Duo diam bullet's first ( Bore Rider's )

rdm

David Tooley makes a wildcat in 7mm based of the 8X68S case. David knows how to build long range rigs

http://www.tooleyrifles.com/

Cheers
/ JOHAN

rdm,

Are you thinking of rechambering the existing barrel or getting a new barrel? Also what is the purpose of the rifle?