Date Posted:21:28:38 05/14/04 Fri
Volunteer Arms was a trade name distributed by Belknap Hardware of Louisville, KY, in the early 1900's. I'm not sure what you mean by 'cocks open from the bottom'. Can only guess that you are trying to describe a normal break-action, where the hinge (and possibly a release lever) is on the bottom. I also suspect that you have a shotgun instead of a rifle. If you want more information, email a full description and/or some photos.