seattlesetters,
I would suggest a PAST Recoil Shield worn under your shirt.
Nobody needs to know it's there and they work!
They work great for sighting in heavy recoiling guns like patterning a Turkey shotgun or 12 gauge slug loads. They have a model made for Magnum rifles if I remember correctly.
My sister in law had a double masectomy and still hunts with a 30-06.
whelennut