Now having said that there are rare exceptions to every rule and this is one .About two years ago my little bud Tom called me up ,huge ash trees ,over 60" inch .I thought BS .
So on my day off I packed up a bunch of the larger saws and away I went only to have failure running any one of them for varied reasons .We cut this monster up using a new then 660 and my souped 038 Mag running a 32" skip . Believe it or not the old 038 mag could keep up cut for cut with the 660 .