I'll also agree with others here that there is nothing at all wrong with the Douglas tubes, they are damned fine.....especially when they get screwed on at Melvin's shop.
Although I have a .243 (love it) as well as a 7mm-08 from Melvin, if I had to choose one for deer it'd be the 7mm-08.
More importantly than barrel contours and chamberings, how will it be painted?
How about glass??
There seems to be lots of love for a Model 20 in 7-08 in this thread, and the #2 contour seems to be popular as well. As for glass, it'd be hard not to go with a VX-3i 2.5-8x32, Z3 3-9x36, or something similar. I don't like to overscope a svelt rifle such as this one. For reasons I can't really explain, the paint scheme I've always lusted after was this one: