Is there a cartridge out there with similar performance to the 300 Win Mag, but in an unbelted case? I know the 300 RUM, but any others? I was planning on doing my new rig in 300 Win Mag, but much as I love the cartridge, I don't want to have to deal with belts anymore. Between the "belt bulge" that's a PITA to get out, and the headspacing issues, etc, I'm looking for an accurate 30cal with similar performance. I'd also like to have it be at least reasonably popular so I can get quality dies and good brass (or at least form the casings from good brass). How does the RUM stack up for this? Accuracy is a big concern as it's primarily going to be a paper puncher, lr hunting rig second.