I ordered a Savage Model 12 VLP DBM in .243 today, I also ordered a Nikon 6-24X50 Monarch BDC scope for it. This scope has 30 MOA of internal adjustment. I want to shoot 1000 yards with this combo. My question is weather or not it would be beneficial to add a 20 MOA picatinny scope base on the gun to improve the range of ajustability? Is 20 MOA enough, to much??? Thanks for any help!