Not sure if it changed recently however, our 1000yd benchrest smallest Group was 4.5" with a snazzy 7mm from an F-Open rifle, exactly the same as the 4.5" group shot with a 308 from a 4lb lighter FTR rifle. In hunting rifles I found the 308 to be the easiest cartridge to get to shoot well.
There are stronger, faster, bigger and smaller cartridges out there but very few that are so easy to get to shoot.
edi
There are stronger, faster, bigger and smaller cartridges out there but very few that are so easy to get to shoot.
edi