I am looking for suggestions on buying low mount/rings that will fit the Savage Arms 11 FHNS 223. I recently received a Vortex Diamondback 4-12x40 scope. Most shooting is around 50-100yds, but I'd like to practice at at longer distances. Any advantage to bringing a specific mount and rings to the gun shop or should I go with whatever is recommended at the shop? I have never had a scope so I am thinking I should have it professionally installed.