do this. go to mars. look for a cabal with a shield and aim at his exposed shoulder with your sniper. shoot! youll be surprised to see an IMUNE sign pop up. repeat the test. happens every time. why you may ask. because the bullet magnetism to the head is so ridiculously high that it pulls the bullet to the cabals head. in this case it works against you because the head is behind the shield. now you see how snipers work and why they are ruining the crucible.