6mm Dasher 1-7 5T all the way. Works great from 0-600 and also can do very well out to 1k. You dont need more horsepower, just burning extra powder and barrel life
If you had a 223 BF a 223 1-7t shooting 80.5 bergers is also great out to 600
Xp100 is the same as a model 7.
However if you are looking to get a center grip stock made for a 700sa, check out these stocks. Jim does a great job making them and he can do pretty much whatever you want. Hes the only one I know of making 700SA center grip stocks...
Burris XTRII 4-20x50 FFP illuminated reticle MRAD very good condition with sunshade and scope covers. I cant do Mils so looking for a MOA scope.
Want to trade it for an XTRII 4-20x50, 5-25x50, 8-40x50 or Vortex PSTII 5-25x50 in MOA. Might entertain other MOA scopes as well