Author: 303Guy
Subject: New brass
Posted: July 07 2020 at 6:22pm
A while ago I loaded up some new Winchester or PPU brass and headed off to the range. I also a new powder thereby introducing a new variable. Well, accuracy was terrible. I had one or two left over rounds which I checked for run out. The run out was visible just by rolling the cartridges.
Subject: New brass
Posted: July 07 2020 at 6:22pm
A while ago I loaded up some new Winchester or PPU brass and headed off to the range. I also a new powder thereby introducing a new variable. Well, accuracy was terrible. I had one or two left over rounds which I checked for run out. The run out was visible just by rolling the cartridges.
So, my modus operandi now is to expand the necks of new cases in stages and rotating them as I do. I have a two step expander that I made. This keeps them concentric and minimizes neck expansion on seating the bullets. Too tight a neck will result in excessive expansion on seating which will most likely be uneven.
My normal reloading practice is to minimally size the necks without an expander ball. I can do these things having as it is, a lathe.