I am new to pistol shooting (other than pocket mouse guns) and i just bought a 539, i really like the gun. i use to shoot allot of trap and skeet and i was fairly good. This was over 30 years ago, i am 70 ish now. I have been out to the range several times at different distances, and i am coming to the conclusion that it is very difficult is shot with bifocals. because if i look though the bifocal then the target is blurs or vise versa. any comments on this problem. i would like to be good at target shooting and maybe competative shooting. Thank you Doug from Florida