My first pull of a shotgun trigger was at a trap range with a gun that I had no business shooting. The 12-gauge Remington 870 was a perfectly fine shotgun, but I didn’t know anything about proper ...

The 98 cents’ worth of plastic shims that came with your new $1,800 semiauto might be the most important part of the whole shotgun. Stock shims let you fine-tune cast and drop to get a perfect fit—and ...