Ricky -
Assuming you meant .22lr, long rifle, which is a rimfire cartridge, then I stand by the figure of 100yds as a practical maximum for field use. Past that, the drop is so steep, and gets even steeper so quickly, that you simply cannot be sure of a clean kill. Some shooters can go to 110 or even 120yds but they know their guns and the terrain well. At 400 yds a subsonic .22lr bullet is still travelling at ~500fps and carrying 25ft.lbs of kinetic energy, enough to kill a man let alone a rabbit, but that doesn't make it a 400yd tool.(It does explain why backstop is so important. A guy i