Christensen- Precision high quality starts $1000 Guarantee! 1 MOA-- great specs and higher end rifles guarantee!! less than 1/2 MOA. For the money Savage 10... or 11... makes great priced long range rifle in the price range.
6.5-300 can get you 1200 ft-Lbs at 1200 yards!!
6.5-284 is next one...
https://www.gunwerks.com/store/rangefinders Gunwerks out of Wyoming has a rangefinder that includes a ballistic calculator. Spin drift, Coriolis effect, angular measurement. Once you range and with already provided bullet type and BC G1 or G7 it will provide you with a firing solution!. You...
https://www.gunwerks.com/store/rangefinders The rangefinder also works as ballistic calculator and provides you exact D.O.P.E. and dials for spin drift, Coriolis effect and angular changes.