I prefer my Mossberg 500A but currently waiting on a new magazine tube for it, So this season I am using my Mossberg 835. As for shells I reload both Federal gold medal and winchester AA hulls in the federal hulls I have 2 loadings one is a lighter load pushing 1 1/8 ounce of #6 or #7.5 shot at 1200 fps my other loading is 1 1/4 ounce of #6 shot at 1220 fps ( my specialty load when the birds are keeping their distance) In the winchester AA hulls I have 2 loadings one is a experiment that exceeds and outpeforms the winchester super speed shells pushes 7/8 ounce of #7.5 shot at 1400 fps the other is for the faster low flying birds helps with not having to put to much of a lead on the bird even at range of 40 yards the needed lead is quite minimal about one bird length, this load pushes 1 1/8 ounce of #7.5 or #8 shot at 1585 fps. Everyone good luck and have lots of fun hope you all get your bag limit.