.257 ROBERTS AMMO NO FURTHER A MYSTERY

I can only imagine whatever they are working with for jacket product in recent times. I'm able to see aluminum and zinc getting in the combo at some point Otherwise by now around.I operate 147gr in equally my TNW PCC (when It is Operating) and experience relaxed with possibly Underwood +P JHP or Winchester Ranger-T. If I locate my MR920 "prefers" o