shot the .458 this morning..... 6 times... the millet was bore-sighted when installed and shot about 20" low at 50yds.... with 510gr roundnose......adjusted lotsa clicks to get it about 3" high at 50....the red dot has a variable intensity switch that allows for different lighting conditions...the recoil was not un-pleasant... but i'm planning on using the 350gr loads for feral hogs...any suggestions for a mercury recoil reducing system?? thanks..jim