Background: Examining my Weatherby Vanguard 7mm Rem Mag, it seems the barrel needs replacement. I've beaten it hard and it certainly looks worse for the wear. Still, I've never heard of this before -- it seems the lands are wearing out near the muzzle. If I am correct, that would explain why I cannot aim for shizzle with it any more. At 200 yards, one shot will be within the 6 ring, the next off paper. I like the Howa action, so thought I'd rebarrel it. For the cost of rebarreling, I could go out and buy a new Vanguard in 7mm RM. I can also install a 26" or longer tube if I rebarrel. I thought I'd try something new: 7mm Shooting Times Westerner, or 7mm Dakota. The STW fits right in with the bolt face, but would require receiver modifications: enlarging the ejection port for the longer cartridge, plus extending the mag well. The Dakota fits with all the receiver geometry, but needs the bolt face rim to have 1/128" removed from the inside (.545"Ø vs .532"Ø). I also read that the Dakota brass is scarce and difficult to work with. The ballistics between the two are ver similar, but the STW uses 20-25% more powder to deliver the same performance. Comments or suggestions are always appreciated.