Don't let internet experts get to you. Round here the
average caliber for whitetail deer at under 75 yards is the 7mm Rem mag! Power replacing placement is such a silly idea.
FWIW the .303 british was determined to be "too powerfull" & "Excessive", after WW@ & there were serious attempts to replace it with something having ballistics akin to the 30-30.
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Allan Quatermain: “Automatic rifles. Who in God's name has automatic rifles”?
Elderly Hunter: “That's dashed unsporting. Probably Belgium.”