'All in all, the effective range of the 22LR for stationary targets is about 300-400 yards, assuming good wind conditions and excellent marksmanship. While you may be able to hit targets beyond 400 yards, do not expect that your shots will be consistent.'__ Quora
The .22LR is effective to 150 yd (140 m), though practical ranges tend to be less. After 150 yards, the ballistics of the round are such that it will be difficult to compensate for the large "drop".
May have been a 223. Hi speed is what does the trick.
'All in all, the effective range of the 22LR for stationary targets is about 300-400 yards, assuming good wind conditions and excellent marksmanship. While you may be able to hit targets beyond 400 yards, do not expect that your shots will be consistent.'__ Quora
The .22LR is effective to 150 yd (140 m), though practical ranges tend to be less. After 150 yards, the ballistics of the round are such that it will be difficult to compensate for the large "drop".
May have been a 223. Hi speed is what does the trick.