........ what is the single best cartridge for hunting mule deer.................
The 270 Winchester!
This i agree with 100% and i could hunt with the 270 and be happy the rest of my life, but i must say the best cartridge for any type of hunting is the round the rifle you are carrying is chambered for and that you can shoot the best in the field . It really comes down to this,that some cartridges are better than others as the game gets bigger and heavier. Speed kill and speed combined with heavier bullets just kill better on really big game like Elk and Bear. I really don't think a Mule Deer or Elk really cares if you are using a 270, 30-06, 280 or 7mm Mag, if you shoot straight you will bag him if you don't then he will get away crippled or untouched and more wise to the education you just gave him if he survives .
