Eldeguello,

I didn't know about the trim back to .02". The first reloading book I looked at was a speer and they specifically tell you what to trim it to. Yes the Lyman has the max case length as a picture I know that now.

I have to admit that I didn't fully understand what you wrote about in your post. But one of the things that I also noticed about the Lyman book is that at least for the 300 WM doesn't suggest the use of magnum primers which I did see for most of the loads that are in the Speer manual.

Thanks

Tom