Rifle only warrior?
If you like ranged damage and are fond of the rifle in particular. Take a look at the engineer. Primary rifle or pistol and has a whole set of kits that you can switch to at will if you have them on your bar. Worth taking a look into in my opinion. Also, if the engineer isnt your cup of tea, you could look into a ranged Thief. Pistols and short bow combo. Just some things to think about. Good luck and keep us informed on what you end up going with!
I’d go as far to say rifle is one of the best warrior weapons
If you manage your abilities well, you should be fine
Use the riffle with the Warrior all the time. It is a great ranged weapon. Kill shot is a great burst damage skill especially if you invest in critical/burst traits.
Also, don’t overlook the Longbow as well.