I haven't got to shoot any of my reloads yet for my .223 Axis, but factory Winchester match ammo loaded with 69 gr Sierra Matchkings shot an 11/16" group during the first 20 shots with the rifle. I think what makes some .223 Axis' ammo picky is that most all of them are VERY long throated. I can load a 69 gr Matchking out to 2.408" to touch the lands. 2.26" is the SAAMI listed max OAL, so all factory ammo will be under 2.26". This will make a lot of factory loads potentially inaccurate since best accuracy is often found less than 0.030" off the lands (but not always). I'm really surprised my Axis shot the factory ammo as well as it did with such a long throat. But as well as it shot the factory load, I bet I can beat it with handloads. That's why reloading is so great. You can try all possible combinations of powder, primer, bullet, brass, OAL and so on to find "the load" for your rifle.