I haven’t a clue, but, I’ll pass this along to a couple known chainsaw gurus that I know and see what we come up with.Stupid question, but alas, I suffer from that.
What are the pros / cons of the 50 gauge versus 63 gauge bar / chains?
Never gave it much thought until I went to the dealer and ask for a couple of new chains (gave them the old one to measure) and when I went to put on the saw, they would not fit, as I have 50 gauge and they gave me 63 gauge.
Is this a MIL / MOA thing?
It was all so that each manufacturer made you buy their chain... now with companies that make them in every gauge and pitch, I don't think it really matters. I will say however, that .063" chain is quite a bit stronger than .050" (the drive links are .013" wider)... It's got a lot more stress area, so for big saws running long chain, its preferred...