Originally Posted by Boss Hoss
Bart--read your last sentence that is where the comment came from. In the BR game .5 MOA will not win anything but a early trip home
There's been single 5- or 10-shot groups at long range BR matches that have won that match with a .5 MOA group.
And if one gets every aggregate's individual group at 1000 no worse than .5 MOA, they'll set virtually all the agg records.
When I say a rifle shoots .5, or even .75 MOA at any range, that refers to the largest group (or all shots fired) is no larger than that. But I don't think benchresters like to use that terminology or term. They're primarily focused on the smallest group fired. I've asked some long range single group record holders what the largest group their rifle shoots and none will give me an answer; maybe they're too embarassed to do so. Benchresters' smallest groups happen about as often as their largest ones, but I've yet to have any one of them acknowledge that. Out of all shots fired, about half will go into the middle 1/3rd of the distance between the smallest and largest 5-shot group size. One-fourth will go into the upper 1/3rd of that spread and another fourth into the lower 1/3rd. It's those lucky few-shot groups at the small end of that lower third that set the single group records. And the aggregate records are the average size of all groups shot which are typically about 2/3rds the size of the largest group.
There's one 5-shot record group at 1000 yards that was one of several groups fired in a aggregate and the agg group was about 6 inches. That means that some of the groups were bigger than 6 inches. I tried to get him to tell me what his biggest group was but he ignored the question and refused to even discuss it. Looking at all the 1000-yard BR aggregate records is easy to tell what the rifles and their ammos accuracy potential is. Multiply the aggregate group size by 1.5 and that'll be very close to what their average biggest group size is. Therefore, I think I believe no long range benchrest rifle and its ammo shoots no worse than .5 MOA all the time.