On the subject of recoil, what formula is used to determine it? For example; I have read that a 358 Norma Magnum rifle weighing 8.5 lbs shooting a 250 grain bullet @ (MV) 2799 fps & (ME) 4350 ft. lbs generates 35 ft. lbs. of recoil energy. I would like to learn how to compare various calibers suchas; 358 NM vs 338 Win Mag, 375 Ruger vs 375 H&H, 358 Naki vs 358 Norma Magnum, etc.

I think that recoil is a deciding factor for some shooters when selecting rifles and cartridges. Knowing how to make accurate estimates on felt recoil may help when making decisions on which rifle to buy and cartridges to use. Thanks