The greatest invention in the history of man is beer. https://youtu.be/2v3QrUvYj-Y Member. SFFP, Shooters Union. SSAA, the powerful gun lobby. Hunt safe.
I use it mainly to keep track of loads, bullet weights, and charges, COAL, etc. It can calculate MBPR but you need to enter the ballistic coefficient of the projectile. Pretty good for the price.