Are you sure you want to load 3.5" paper? You can cut your hulls down to 2.75" and use them in the longer chamber, there's plenty of info on 2.75" low pressure loads out there. Does your Vintage 12ga have a 3.5" chamber? If so, was it altered? I'm slightly confused....

Regards

Ken

Last edited by Ken61; 04/14/17 08:41 AM.
I prefer wood to plastic, leather to nylon, waxed cotton to Gore-Tex, and split bamboo to graphite.