Daryl, your comments back up what my purpose was when I started looking at the Metplat on these cast bullets. .390 was just a diameter that the first one came out of the lathe at and cycled through the rifle with out a problem. It has to be reliable and accurate and hold together. I cant get to test them at the moment as we in stage 4 lockdown with this covid Virus and it looks like we are going. I have also gas checked to help them stabelize through the Micro groove barrel.

Hunter4752001 I will give John a try. I would like to get some at .460 or .461 to test for accuracy. We will see how they go.