'71,
Yes the 16 is a reloaders gauge, but I have two of them right now, and if I ever talk dad out of his I will have 2 more! Shells are more because there are not as many people buying them, I just picked up a couple of boxes the other day, 1 1/8 Oz. high brass Remington was $16.98 a box, 1 Oz. low brass was $9.95. I have seen the Estate brand 1 1/8 Oz. high brass for $13.85. These are the prices here in SW Ohio, other places might be better or worse. Right now I am looking for a reloader myself for the 16 ga. But I can go out with a 16 and take anything I can with a 20 or a 12, I just have to pick the right shell is all. I hope that helps.
Greg