here is a sample vid of stihl full skip square ,ground off my silvey with some angles i use ,a little sharper than off the roll is ,,log measured 22 inches across ,that's a 32 inch bar on one of my 440/460 hybrid's ,notice the log is just sitting on the firewood blocks for support ,not tied down ,the chain is not real grabby,and i am not pushing hard ,the weight of the saw is doing the cut ,wood is hemlock ,i would say it's not as hard as doug fir ,but harder than cedar ,maybe similar to a pine ?,notice the full skip ejects the chips nice in the softwood ,they pile up on the ground pretty fast ,my semi skip is similar in cutting ,but better at starting a bore cut and limbing than the full skip