I started with Titegroup and played with that, but it's been a while and no good access to a chrono. I was having some issues with "spray" from the loads and sometimes not locking open last round/FTE, etc.Right on. Curious to hear your thoughts on the N320 overall as well. W231 runs clean at near max charges, but gets pretty dirty when you try to back it off. I've heard good stuff about the N320 at greater charges. If it stays clean for you on sub loads, I may have to snag a pound to play with.