Graph 1.


Graph 2.


Graph 3.



How to evaluate your equipment's performance:

Information you need:
the arrow's weight in grains,
the arrows's speed in feet per second,
the broadhead's resistance in pounds,
the intended animal's weight in kg.

1.  First you use the Arrow's resistance and animal weight on Graph 1, to get the broadhead's required P2

2.  Then you use the Arrow's weight and animal's weight on Graph 2, to get the arrow's required P2

3.  Add the two values.

4.  Then you use the Arrow's weight and speed on Graph 3, to see how much P2 your bow shoots.