I've shot around 1200 rounds thru my G26 Gen 4 with about 500 rounds of that being Tula. Never had any issues! IMO, it's not any dirtier than WWB or Federal. I've been having a hard time getting it at Walmart! They're always out! I've seen the bulk prices, but after adding in shipping, there's not much savings. So, I just continue to buy it by the box.