Posted 15 January 2012 - 11:42 AM
I have jpoint red dots on 45 and 22 slides for my 1911. They work quite well for me, although opinions on what is accurate for a handgun seems to vary a lot from person to person. The closer you can get the dot to the barrel, the better off you will be for shorter ranges. The further you go out, the less it matters. You can optimize the zero point to give you the largest accurate range using a ballistics program like Chairgun or many others. As a general rule of thumb, a first zero at 15 to 20 yards will give you a second zero out around 40 to 60 yards; the exact optimum zeros will depend mostly on your muzzle velocity and the size of the poi variation that you want, and to a lesser degree on BC and other variables. A zero at 10 yards will generally not be very good unless you have the dot very, very close to your barrel.