Shot this ten shot group on Monday night with my Savage M12, .223 on the 100 yd. tunnel range in Nottingham. Bear in mind this is not bench rest but prone with the aid of a single point sling. At it's widest point the group measure's 1.25 inches but the central cluster is less then 0.75". The low shot that opened the group was shot number 8 and was due to a loss of concentration, I actually watched the cross hair slide down and right as I released the shot.
Bullet is the NEI .224-71-DD-GC. Cast from WW, heat treated by quenching from the mould, sized .224" and lubed with Lyman SuperMoly. All loading is with a Lee collet die set.
Load is 10 gr. VV N320 with a CCI magnum small rifle primer for just over 2100 fps.
I know that one group does not prove much but my rifles tend to do this sort of thing just to make it clear to me that it is not they that are letting the side down.