Re: scope height?
1. measure the diameter of the barrel directly below the objective lens this = a
2. measure the diameter of the objective lens this = b
3. measure the distance between the bottom of the objective lens and the top of the barrel this = c
scope height = (a/2)+(b/2)+c
NOTE: measuring the distance between the objective and the top of the barrel can be difficult especially with a bull barrel. Typically this method requires removing the action from the stock.