Thread: Testing a conventional approach to load development

Originally Posted by gimp

my current understanding is that with any particular load, you would expect + or - 60-70% variation in 3-shot group sizes. So what I'm seeing with the "tuning" of different seating depths is within the normal variation expected of any load.

This figure comes from hornady -



And it is consistent with my observed results - for example https://www.nzhuntingandshooting.co....3/#post1656779


With the factory ammo that shoots around 3.5MOA out of my rifle, 10x 3-shot group sizes showed a variation of + or - 60-70% from the average group size.