At 6'-4" -- a 28" bar is where it starts to get comfy for me. And there ain't a whole lot of timber I get to cut in these parts where a guy would have to double-cut with one.
Run whatever you're comfortable with, don't feel pressured to buy longer iron. . . Unless ya want to.
Like Bitz and some other fellas have said though, it's much faster to always be 'tip-out' in wood. Lot's of good reasons IMHO to not fall timber like the Europeans. Which is not a sleight against them, they've developed some cool techniques and tools.
But then again, if you're trained up and skilled with a 20" bar, you can knock it in the head as good as a guy with a long bar.
Ol Wade don't do a whole bunch of messing around, he just pounds some trees into the dirt. He ain't a little fella either.
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