I've built a couple of 460s from spare parts and use them on 3' diameter black oak , 32" bar, no problems. My old 440 will keep up with it but the 460 has proven itself to be plenty capable for my needs. Of course they won't keep up with my old 064, but they ain't as heavy either, and like Wolf said, use the lightest saw that will get the job done! I'm no pro by any stretch of the imagination, but I know what works. For milling, the 460s with a semi skip tooth do a fine job, and have produced some really nice slabs for me recently.I have an old 046.