The 16 was much more popular than the 28 and it has all but disappeared. I know those who love it will cry fowl but face facts. Walk into a Dicks Sporting goods store and see which are easier to find the 16 or 28 shells? Mine always has two to four 28 choices and I am lucky if they have one for the 16. The 28 is one of those things you buy when you have covered all the other things. Like a corvette to a 50 plus year old. A reward to yourself not as something you really need. Just something you would like to have.