T:
I beleive that you will find that a 26" will swing a
little faster than a 28 or 30. That is why I have
26" in both my M1 and my Nova. I also have a
Remington 870 in 28" and it does seem to me to
swing slower. My advise would be to try both
the 26 and 28 and see which one is better for you
and that you like the best.