I just went through the same dilemma and ended up with a fluted #5 from Pac-Nor. It weighs about the same as the Remington magnum contour barrel it replaced.
Just a FYI, I have shot the 190 matrix 7mm at 2505 fps out of a 280 ackley with no issues. And currently I shoot my 7mm Dakota with the same 190's with awesome accuracy. I have shot at sea level up to 6500 feet w/o issues.
Have fun!
Chris
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