Welding Tips and Tricks

I'm using a Miller XMT 350 with a 70 series wire feeder.

I'm running .045 ESAB Shield-Bright 316L dual shield wire at their recommended settings of 24v and 300-350 ipm. It welds great for a little while then it starts burning back really bad, it sputters the burnback too so I'll be welding and it'll go from a nice buzzzzzz to zap-zap-zap...

The contact tip does not seem worn out or discolored nor am I running so long I'm overheating the gun. This setup running dual shield steel wire works fine no issues so I'm just wondering what I'm doing wrong.

If it’s still burning back, then perhaps turn the voltage down a bit or increase the wire feed speed. Maybe I’m missing something.

I think I figured it out. I'm running slick V groove rollers. It looks like the wire has been slipping. I'm going to order a set of knurled dual shield rollers.