Saw this video last night. .50 cal air rifle that shoots a 250gr lead bullet at over 1,000fps (700ftlbs) and a 550 over 800fps. pump action (2" pump with 2lb stroke) and three shot mag.
Running number shows that the 550gr at 875fps would have over 900 ftlbs of energy at the muzzle and still over 700 at 100 yards, even with a crappy bc of .10
Running number shows that the 550gr at 875fps would have over 900 ftlbs of energy at the muzzle and still over 700 at 100 yards, even with a crappy bc of .10