Try a Space Wolves Long Fangs Pack! 6 Marines, Leader + 5 armed with Missile Launchers for 140pts. Not bad ranged weaponary for the points in my opinion & also have Fire Control which means they can split their fire if required. Admittedly they come in a bit costly if you want to tool all of them up with Lascannons but Missile launchers are pretty effective and multi purpose.Space Wolves are awsome too, but are a bit short in the field of ranged weaponry.