you can actually make your own "shotgun" rolls, which is how a lot of those that pop up on
ebay are created. there's a device called a twist-n-crimp, that rolls the open end of a pre-formed coin wrapper into a shotgun style roll. this is another reason to be wary and skeptical of so-called "unsearched shotgun rolls" just because the roll has two rolled ends doesn't mean it hasn't been thoroughly searched and picked through.