I shot and reloaded ACTIV hulls when I shot trap regularly, they reloaded with no issues. There was a steel insert in the base for holding the primer. Issue I had with them is the plastic rim would get chewed up by the extractor after numerous firing cycles. When I fired them in my 870 they would sometimes slip past the retainer in the magazine tube due to the chewed up rim and pop out of the tube. They would end up inside the receiver and jam up the works. Sometimes I would have to pull out the FCG to get them out if I couldn't get them to go back into the magazine tube. I got tired of dealing with the jam's and quit using them, I gave them all to a guy I worked with.