I don't have either but the two things you mentioned make the Mossberg a good choice to my thinking. The Rem 870 has a better rep for quality, even with Rem's recent history of QC issues, I've been told, but with arthritis the 20 gauge might be my choice if I go down this path.

And if I were to buy a 12 the Federal or Aguila short shells would make me lean towards the Mossberg.


Retired cat herder.