I’d say 3/4” for me. It’s amazing how difficult this can be. Over the years I’ve learned to be able to call/feel a bad trigger press.
I know when I’m dialed in and stacking them nicely. Bottom line I need to do this more often.
After listing to Frank’s interview with Adam Cloaninger I decided to try some 10 shot groups in load development. After analyzing the process I think there is a lot of good things you can learn from shooting 10 shot groups.
Quick Summary: you can evaluate shooter, rifle and ammo all at once.
Detailed Thoughts:
I always considered it more of a test of shooter fundamentals. This is true, but if you are honest with yourself you can get some great data and learn about not only yourself but the accuracy potential for your rifle.
Pairing this with a magneto speed on a MK machine mount also allowed me to get more data to get confidence in my load. Ten rounds is still a small sample size, but it’s better than five.
In this 10 rounds group I honestly called 7 good shots. The three outside we’re a combination of rushed trigger pulls and not a perfect shooting position.
If I screwed up shooting a 5 shot group I wouldn’t have the 7 good shots stacked up.
Here’s the chrono data. It looks like a consistent and good shooting load. I’ll shoot a few more to verify.
Rifle Setup (shown on bench, shot prone with Atlas in 90deg position with rear bag support)
The chrono mount on the spigot makes it really front heavy.
