Had a friend describe a problem regarding some recently reloaded 30-378 bullets and I wanted to run it by the collective brain trust to verify my suspicion. I didn't get to ask him all of the details, but here is what I'm able to pass on-
He's new to reloading and I think this was his first attempt at reloading. As described to me, he loaded 20 rounds using new brass and a moderate powder charge using a manual he had. (powder charge) He didn't tell me what kind/weight bullet he used. In the course of shooting the first few, he noticed creases/deformities running from the neck back down the base of the shell. There were three of these ridges/deformations on each shells he shot. He stopped shooting the reloads and tried again using new factory rounds. All of the factory rounds were fine with no deformations on the brass.
Question: does he have a head space issue or could he have possibly overloaded/ used the wrong powder to cause an overpressure issue ??