RE: 300 win mag
Here is a link to a recoil calculator. It works pretty well.
If you are trying to prevent to much meat damage I would suggest using a premimum bonded bullet in a heavier weight. It is less likely to violently expand on a thinner skinned animal such as a deer. The expansion will be more controled and you will see less damage even if bone is hit. Large for caliber bullets also work well at moderate velocities and don't require being bonded. The Sierra Game King for example.