My goodness, shooting a classic SxS is suppose to be FUN. Several issues:
1. If it's a 12g, I'd strongly suggest going to 7/8 oz 1200 fps loads. Fiocchi calls their's 'Training Load' and you can order them from Graf and Sons
http://www.grafs.com/ but there are lots of other sources for light loads:
Polywad 'Vintager'
http://www.polywad-shotgun-shells.com Eley subsonic/low recoil
http://eleyshotshells.com ARMUSA 'Vintage'
http://www.armusa-performance.com Kent
http://www.firearmservice.com RST
http://www.rstshells.com 570-553-1651
2. I'm almost 6'3", 175, 36" sleeve and on my SxSs use 15"-15 1/4" LOP. You may well be mounting the gun out on your deltoid (shoulder) muscle (rather than on your pectoralis/chest) in order to auto-correct the short stock which acts like a severe cast-off making it harder to get your eye looking down the rib and causes the gun to recoil more into your face.
3. When you get the correct LOP, you'll have even more drop to the stocks (your face will be further back) They don't look very good, but you may need to add one of those stick on pads. Southwest Shooter's Supply has several different kinds and thicknesses
http://www.swshotguns.com and they also cushion recoil quite a bit.
Brother, you do have good taste in shotguns
so make them right for you! Have you been on
http://foxcollectors.s10.forumsplace.com/ yet?
