Don't need one myself, but it's a good one for those that want just a leetle more oomph. It's got a good reputation for accuracy, doesn't kick all that much, and with all the rifles in existence, ammo and brass should never be a problem. It doesn't get much airplay these days, but remains a World standard round.
My late brother had a Brown Precision rifle in 7 Rmag built on a Mark X, and it was a dandy.
