Really liking 3" H-13 5's & 6's, in my 870 SM 26" MOBL with Jellyhaid .660
Same for my SBE II, which has a newly discovered liking to 3" MB + Jelly .660
I've been shooting 3.5" for many, many, years, but unless 3" just rolls out the end of my barrel, I'll try to stick to 3", it's just so much more fun to shoot....
mudhen