Well as some of you know, your eyesight greats a little weak when you get older. So this morning I go the range with my 27yo . When I get there my prescription shooting glasses are missing and all I have is a pair of real cheap reading that I buy by the dozen. .So I go to the line with my Sig220 and just concentrate on lining up the sights with my reading glasses . Now the target is at 50ft and it's a little blury but I can see the center. 5 bull eyes and 2 very close. Now I think no way and take my new 1911 that I just got about the same thing 4 bulleyes and 3 close by and I'm in shock. HA HA I shoot better with 3 dollar reading glasses than $300 prescription shooting glasses.