I've got a six month old Weather Warrior in 223, at the range with a cold, clean barrel the first couple of shots for the day cluster about an inch off zero at 100 yards, then behave themselves.
This seems to follow true with most of my experience with rifles, when hunting I usually put one into the ground before setting off, just to clear her throat.
All my previous rifles have been old(er), one of my 303's was WW1 issue and I thought nothing of having to do this, but the 223 is new and I'm wondering if this is normal.
I'm spending a lot more time at the range these days and am taking more note of accuracy than I used to.