I'd look into the new Remington 1100 Comp.
This 12 gauge is on the heavy side, which helps with felt recoil. It also has the new Pro-Bore overbored barrel which also helps. It comes with the factory Sims Limbsaver "R3" which again...helps soak up recoil.
The 1100 series was already a very good gun before these new improvements. Parts are all over the place. This 1100 is 2 3/4" only and will handle light loads, but can handle the lightest loads with a little attention by good gunsmith. The gas ports in the barrel can be opened to help cycle 7/8 oz. loads as mentioned above.
The new 1100 COMP. is a serious sporting clay gun with a serious price of just over $1,000. Still a good price and a good gun considering a decent O/U is around $2,500. Also....the 1100 COMP. is ready to go right out of the box including extended Pro-Bore choke tubes.
If I wanted a 12 gauge clay gun, and I was worried about recoil and reliability....I'd buy the new 1100 comp.
Regards,