I've been using a HS503GU for 3yrs. I like it as do friends and grandkids. I can shoot 8" steel up to 200yds easily, 300yds with some luck. The 2moa dot is very easy to 100yds, after that I have to work at it. I haven't replaced the battery yet - the auto off and shake wakey work great.
Last edited by dla; 09/13/20.
