I will be doing some Deer hunting this fall on the East coast. I have been told the license will allow me to shoot a bear or deer if I so choose. I have three rifles to choose from, a 300win mag with 26in barrel, 270win with 22in barrel or a marlin 336 in 30/30. 300 and 270 are scoped 30/30 isn't. I have been told that all shots should be under 100 yards. Which gun should take? I want to get an early start practicing with the rifle I may take.