Leaning against my vintage shooting brake is what is known in the printing trade as a "web end". It is a form of unrecyclable corregated cardboard, with a plastic barrier in it, to protect rolls of web paper in transit, or, while in storage. If you live close enough to a large commercial printer, they will likely let you have as many of these as you want-they pay to dispose of them. The most common size, for half web sized web printing presses, measures 38 1/2" across.
I've shot hundreds of these things over the years, at which point I use them for working under the car, and then cut them up and throw them in the trash. Once they have a little drain oil on them after an oil change, they are useful for lighting my brush pile, which, gives me even further satisfaction, as my carbon footprint is then greater then if they simply go in the trash.
I have a 1957 vintage Ithaca 37 in 16 gauge, with a 28" modified choke barrel. It throws really tight patterns as it is, and I have used it with great success-for trap shooting. It is almost too tight for anything I get to hunt around here.
Good luck.
Best,
Ted
