Originally Posted by Mikecr
It also appears to me that by far most final results in both F-Class, and 1k IBS, blush to the .4MOA pic posted. So apparently not all folks are doing so well at LR as Bart.
Get out on the range at 5 AM, set up and shoot at 5:30 while the sun's still well below the horizon. Your test groups will be shot in air still enough to see, with a decent spotting scope, bullet holes in the black a long, long ways away. As the sun gets closer to being visible over the horizon, the air often starts moving a little bit and drags bullets in flight with it.
Others with similarly loaded ammo I've mentioned have been out at that time of day at similar ranges shooting .2 MOA and smaller 10-shot test groups.