[joerng]

i would look up the specs on your gun and see at what range the gun was tested for accurecy at and use that range. most are done at 15m or yards but some are done out to as much as 35-40m. i would not go over 25m though, unless your praticing for competition or somthing. i usually shoot 10 and 15m but i still go out to 25 once in awhile just to make keep it fresh. thanks... joe.