To get the Lightning to chain as far as it does you have to select specific perks, same thing with the ranged melee, you have to give up specific perks. Like you have to give up landfall or blink to have super conductor (unless you have impossible machines but it's definately better to have the claws for double melee or voidfang for grenade. Remember, when you see a storm caller, make sure your team fires at the same time but be careful for when he gets closer. The initial RT damage isnt enough to kill if you got shots off before he got to you (especially if you have a high range/impact shotty BUT if you have any team mates around you when he hits then you will takr the initial RT damage AND the chaining damage (which is a constant drain on hp) Also for those who point out that it can kill you after you respawn: Wait a little bit before respawning! Any time ive ever killed someone once and got them again with it is because they spawned as fast as they could and were running to find me again. If you die by a stormcaller literally just wait 3 extra seconds and hope it says "looking for respawn location" because then it will spawn you away from enemies.