As long as you are using the correct chain for the bar and sprocket (look at the specs on the end of the bar), you're good. You will be fine using 3/8" /.050 chain on both saws. I run it on my 361/20", Makita 8400BB/28" and Mac SP 125/36".
EDIT - I misspoke, the SP 125 has 3/8 x .063 chain...