I have a M-308 on my DPMS LR-308 and one on my Remington 700 AAC in .308. Great glass, easy to use and backed by Nikon's outstanding warranty.
I like the BDC reticle because I use both rifles for hunting and shot's of 500+ yards are possible. I also dialed in my scope, rifle and ammo using Nikon's Spot On Ballistic Program to maximize your accuracy. I have also used the Nikonplex reticle scope that has the Rapid Action Turret dialed in for the .308, 168 gr bullet at 2680 fps.
Drop me a note with any questions about this scope. It has quickly become one of my favorite scopes from Nikon.