Talking about the Danish M39 training ammo with the plastic bullet/5mm BB. The one used on the Swedish K with the special tapered barrels. I read a thread some time ago where someone was pulling the plastic bullet, dumping the powder and reloading as primed brass (Berdan). Well, I pulled about 900 rds of this stuff using the RCBS collet puller, which worked great. Interesting, the plastic bullet with the 5mm BB in the tip, is hollow. Dumped the bullets and powder. Looks like decent, berdan primed brass. I've done a bunch of Google searches but cant find any reference to it. Any experience, or words of wisdom?