I thought that I had solved the problem but after trying more this morning, no good.

I have tried rounds which I have reloaded using previously fired cases from my rifle, all ok, so I assume no problem with bolt etc.

The press is a R.C.B.S. and no obvious problem with it as I have used it for reloading three different calibres.

The cases I bought as "once fired" are I think "once fired" and were from "bought" ammunition, one lot Norma and the other Winchester, so it's not case specific.

The thing that I do not understand is that I have reloaded Winchester "bought" cases from a friend who is a fox shooter, so only "once fired" and they have reloaded and fired without any problem for him.

I have taken my full length sizing die (which is a Lee and not a R.C.B.S as I previously wrote in a earlier thread) down by turns until I have run out of die thread. Still no good.

Is it the same type of problem that "Loiner" wrote about in an earlier thread?

I'm stumped and any ideas would be welcomed.