that short mag would probably be a good pick. for scopes, get the best you can afford. for those yardages, i like a variable power, and at least for me that basic 3x9 is plenty. a deer looks pretty big in the scope at 300 yards at 9 power. i knowa lot are making 4.5 x 14, but i dont think ya need to pay for that higher zoom. i would get the highest objective lens you can get though. just my opinion.