I would like to calculate out what kind of recoil ft/lbs my rifle is producing and at what rearward velocity.

I am shooting a 9.8LB rifle with 97g of powder and 400g bullets at 2510fps.

What I did was load up my 416 Rigby (Ruger RSM) untill I could not take it any more to find my limit. This is a bit more recoil than I feel I could or should regularly take. The reason I would like to know the numbers is I am planning on buying a double and want to be sure I am not going to go into silliness in the recoil department.

I know that there are many factors in "felt" recoil such as stock design, bbl weight and length but I would just like to get an idea of the actual calculated recoil. Then compare it to things like the 470, 450-400, 500-416, even the 500 at the usual weights these guns are made at. It's not perfect science but fun none the less.