Sorry for only a 3rd post amateur reply, but the chain is round chisel made by Carlton. I had one loop in .325 and the chips were really flying, until I rocked it out bad on a rock grown into an urban stump. I went with the 16" Forest-Champ bar in .325, titanium made by GB(at Bailey's) which all you experts seem to approve of. I approve too for $16!, athough I thought perhaps titanium would be lighter, must just have a tad alloyed in? Anyone have any thoughts on the Carlton Pro-Champ titanium bars Bailey's has? I'm contemplating those for the 357xp in the hands of fedex!