In this the day of the short Mags, it makes sense for Remington to bring back the 6.5 and 350 mags. Both are fine calibers. The 6.5 Rem mag was intended to compete with the 264 Win Mag. Niether caliber really made a big splash even though they were about as good as it gets for long range hunting of deer and elk size game. I had a 6.5 in the old 600 series of Remington rifles the 660 I believe. Talk about muzzle blast!!.