Not weird. The image itself is 8.5"x11". Most printers can't print all the way out to the edge of the paper, because of the pinch wheels that hold the paper by the edges and move it through the printer.

I'm not sure where you're finding these pages to look at. The only Model Aviation articles I can find are in the Member's Only section, and are standard web pages which should be automatically formatted to fit your printer when you go to print.

If you can view it, you can save it. If the "save image as" isn't a choice when you right-click, that means what you're trying to save is not an image.

It does not make sense that they would protect the page. If you were able to access the Members Only area, you already get the magazine, so there is no loss of subscription revenues or copyright problems...