You can get the right barrel opened up for about $75 so if it is a good enough deal and the right gun go for it. It would be fine for grouse
I reload Polywad spreaders so IM would be ok for me, but I'd prefer it more open as a rule.
I do a lot of Woodcock hunting over dogs in really thick stuff so C/IC is better for me, so the spreader loads in my IC/M guns work out well in the 10-to-15-yard range which is most common.
