A very good read here. Many top tier guns tested with top tier ammo in a controlled environment and the human free influence of a machine rest. These are typical of the guns this thread speaks of and are not necessarily dedicated IBA bench guns.
You might want to cut to the chase and convert all the mean groups or the best mean group from the most accurate gun from metric to decimal. Anything less than using the mean lacks empirical value.
Here I did it for you. 10 top flight guns. Best 100 yard 10 shot average gun was the 2500 and the OD was 28.329 which converts to 1.115". Subtract .22 and you get .895" ctc. Very impressive IMO.
Worst is 33.89 which converts to 1.334" subtract .22 and its 1.114" which IMO is also quite impressive.
Personal experience in building a half dozen guns now tells me with a bag and bipod off a bench I can produce guns that will shoot sub MOA many times with 5 shot groups at 100. As soon as you start collecting multiple test series such as the 6x5 test you lose that edge and they become barely under or at MOA guns.
As soon as you switch to 10 shot groups my guns produce at and just under MOA groups on occasion, not the norm. With multiple test series it jumps to over MOA and they are somewhere in the 1.25" range on average bench, bipod, bag in good field conditions. This is pretty bad ass under field conditions regardless of wind speed or direction. IMO
The same field conditions at 200 have not once produced a sub MOA 10 shot group for me if I count them 10 for 10 as fired. I have shot many 5 shot groups under MOA at this distance but even then they are no where near the norm. Vertical on all the ammo I have shot is the killer at the longer ranges and I have shot ctrX the most in my personal gun.
Additionally there have been zero instances where anyone has personally shown me a repeatable sub MOA gun at 200 yards to date and I happily challange all comers.
I truly want to get to the heart of the rimfire potential with field style guns/conditions but I think there is so much false info out there its very dicfficult.
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