Re: Which Remington 700?
Two options for rifle:
1. 700 SPS Tactical 20" (decent stock, lower muzzle velocities)
2. 700 SPS-V 26" (terrible stock, higher muzzle velocities)
I went with the 26" over the 20" because the longer barrel produces higher muzzle velocities and I needed that because I am going to be shooting at 1,000+ yards a lot this summer.
When I bought my SPS-V, it came with an AICS stock , so the factory stock differences between the two wasn't a factor in my decision.
With optics, I'd look at a 10x SWFA Super Sniper or Bushnell Elite 3200 ($300 each) One of my friends still uses the SWFA on his .50BMG and loves it, another one of my buddies had the Bushnell on his .50BMG and had no problems at all. Both compete in 1,000yd. matches with their fifties and while using those scopes, they've shot great scores and placed in the top 3 regularly.
If you'd like a variable power optic, I've owned two Nikon Buckmasters 6-18x40 ($350-$380)...I sold one and I still use the other one. I'd steer clear of the BDC reticle though, that's what I use now and it's a bit too thick for me. But it still gets the job done. I had the Target dot reticle in the other one and I wish I still had it. I'd buy the Mil-Dot if you decide to go down this route.
There are plenty of other optics, some were mentioned in other posts, but these are the one's I've had experience with.
Just be sure to purchase a quality optic, don't settle for something cheap, it's not worth it. Besides, you can get more money back if you decide to sell it down the road and upgrade to something new.
Hope this helps.