Hitting an enemy gives them 1-4 stacks of 2.5% Brittleness. Debuff lasts for 5 seconds and can have a maximum of 16 stacks.
60% Strength on your First Attack every 3.5-5 seconds.
14-20% Damage on Second, Third and Fourth shots in a Salvo.
Non-Horde enemy targeting should be prioritized. Bosses will go down quickly with repeated head shots and even faster using combat stance. Frags will easily clear hordes and lesser-medium armored enemies due to the bleed stacks finishing them before they can stand. Curios are not mandatory and can easily be replaced to your liking :).