Good advice. The Sweet 16 fired flawlessly from a bench when I patterned it. It also fired perfectly standing up. When I duplicated the condition where it did not cycle the 2nd shell in to the chamber by sitting against a tree in a Turkey situation, it failed. The angle of leaning away from the tree, looking through the Red dot just created a weak shoulder contact leading to cycling problems. The Gun barely kicked even with Apex TSS Turkey loads. You tube videos highlights this problem if you find the reviews. I never had this issue or any cycling problems with the SBE Benelli's which are also inertia driven. This is just what I experienced, I harvested 2 Tom's with the Sweet 16, both times the gun didn't cycle the 2nd shell. I decided that I didn't want to take a chance on failure during the moment of truth, so I moved on to the SBE. Maybe the 20 doesn't have this issue, you can do the research and check it out. Good luck with whatever you end up with.