Another thing that pays dividends with adequate testing of ammo is learning not only which ammo your rifle prefers, but whether small differences in accuracy are worth it to you. I've learned that my CZ 452 American isn't fussy about ammo, and I've found that expensive ammo like RWS R50 might be slightly more accurate than Wolf Match Extra, with the emphasis on "might", but not enough or with enough certainty to cause me to go with the more expensive ammo. To put it another way, the testing I've done has given me a level of comfort with the Wolf ME.
There are formal statistical tests of significance between means (averages), but I don't bother calculating them. Just looking at the means of the pairs for different ammo has been good enough for me.
Paul
