I always called BS on cooper my long time hunting partner had a cooper in 223 AK that wouldn’t produce groups like the test targets
He called them for the
Load and go a vague answer now I figured they stacked targets with a bench rifle also.
After visiting cooper and seeing the inefficiency of ther operation ther was no way they were working up loads for every rifle and selling them for then 900 dollars
Years later I bought a slightly used cooper in then new 204. All be damned if it shot just like the target. So
Maybe so.