Due to a bad back I carry cross-draw and have tried both the 2.5" & 3" 686's
without any issues other than I thought they were a little heavier than I wanted
to tote around all day. I also carried a 686SSR (4" bbl) for awhile and that was too big.
One day I knew exactly how Goldilocks must have felt when she was
in the Three Bears House trying out the porridge, beds, etc......
I strapped on a 2.5" Model 66-2 that I picked up and it was just right.