Good point Rick. My rifle twist is a 1:7 that opens up to 1:8.5 as measured. Berger feels that a 1:8 is the ideal twist rate for a .204 ruger with the 55 grain bullets depending on ambient conditions. I am also shooting pretty close to sea level at various temps. It is a point worth noting that you ...

I shoot the 55 grain bergers. Current load will shoot under 0.5 MOA all day at a MV of about 3600 fps. The rifle is a custom build.

My apologies if I came across as one of those people. Am I one of those people? My concern with the chamber question is what I think I have figured out flies in the face of my intuition and some of the guidance that has been proffered here at least for lighter weight bullets and I can’t seem to work...

The Berger site recommends a 1:7. After talking to one of their ballisticians it would more than likely work with an 1:8 at least marginally and probably be a bit touch and go with the 1:9 according to Berger. Additionally there should be some issues with the relatively low velocity that i will prob...

I would appreciate any insight the collective may have. First a little about me and my plight—sorry if this gets a little bit long. I am a moderately experienced handloader. Managed to get several rifles in the 1/4 to 1/3 MOA range. Some I have been unable to get into the 1 MOA range. I have spent a...