Re: 300RUM vs. 300WinMag
The 300 WinMag is a classic that will endure, and I liked mine a lot. Especially for a lighter rifle if using lighter bullets it really makes the most sense.
The advantage does become quite significant with heavier bullets in the RUM though. With Wilcat Bullets coming back, a heavier Berger possible in the future, etc, the future is looking even better for the RUM. If you plan on having a brake, or plan on the rifle being heavy, or simply can deal with recoil better than most I'd recommend the RUM. If none of those three are the case, I'd go Win.