The most powerful auto I've used is a Tigerspite with Kill clip and Outlaw. Being a 450, the recoil is very easy to control; the idea is to get one precision kill, reload with outlaw into kill clip, and just keep the bullets flying at heads. You can keep this loop of outlaw and kill clip up so long as there are red bars to shoot at. As far as trash-clearing goes, it's second only to Prometheus Lens, and that's saying something since Prometheus is probably the best trash clearing weapon in the game. Another fun auto I have behaves more like a pseudo-trace rifle. A misfit with alloy magazine, dynamic sway reduction, under pressure, and a stability masterwork=a pure tack-driver/laser beam. I put a backup mag on it for a huge magazine, meaning that I can make more use of the sway reduction. By the time under pressure kicks in, the weapon has absolutely no recoil, and there is no reason to reload before a magazine is empty because it reloads so quickly just by running dry. The only auto I've had reload faster(not counting outlaw buffed) was a Valakadyn with drop mag. My only goal for autos now is a Halfdan-d with outlaw and either kill clip or rampage. I'm more partial to kill clip for auto's, but I have a feeling rampage might just be better for a high impact. That and with kill clip, I can put on a counterbalance stock. Add in steady rounds and the mule-kicking recoil won't be too hard to handle.