I will second Mike's comments regarding the Ideal. Simple, strong and the benefit of 100 years of continuous production and with probably over 100,000 made (roughly 75K from 1888 until 1939, post WWII production numbers are unknown) there is a large body of experience and knowledge available to those who will look.
I've shot both of Mike's 16 gauge Ideal and have a 12 gauge myself. Very nice handling guns and incredibly ergonomic. The only drawback I have found is the safety. I treat mine like a pigeon gun.
Like Mike, I took a chance on a second set of barrels for my gun but unfortunately the second set of barrels is too small to fit properly. I was doubly disappointed as they were made the same year as my original barrels, 1919.
I'm on the lookout for a nice 16 but Mike's trying to corner the market. LOL
