Now, Tom...the 20 can't do everything the 16 can WITH A SQUARE LOAD! I guess I am of the opinion the 20 isn't needed because the 16 can do everything it can. The sixteen was the most optimized bore that could make a drilling truly portable in the early days, and therefore it will stay on board as long as I am alive. (since the guns I know of are on definitely on track to outlast me) In a perfect world I would be more in favor of 10/16 ga. domination than 12/20 as far as square loads go. Then again, a number of 10 guages are not exactly the definition of portability. Let the popularity slide--then I'll pick up some sweet sixteens for less money. Steve