New to the site. Lots of great info here. I just picked up a Rem Sendero in 7mm Rem Mag and could use some advice on bases and rings. Scope for now will likely be a Zeiss Diavari FFP 2-10 50mm that I already had on another rifle. Still trying to decide on a long term scope for this gun but will likely stick with 30mm tube and 50mm objective. 1. What's the practical difference between a 0 moa and 20 moa base? What I mean by this is if I go with a 20 MOA base will there be a negative impact to shooting at 100 yards? 2. I plan to cerakote the rifle. Are there any negative consequences to cerakoting the base and rings? 3. Steel or Aluminum? 4. Recommended manufacturer and height of rings for my set-up. Appreciate any feedback on this. Thanks.