I had an older fella get me started turkey hunting 20 years ago. One day he called a big tom in, and I wouldn't take the shot because I thought it was too far. After the bird left, we stepped it off and it was 32 yards. I am far better with yardage now (little more seasoned...HA HA), but I still won't shoot over 35 yards. But here is what he told me to remember. If you can see the wet of its eyes, its in range. If you can see the hair in its chin, its too close. This has stuck with me all through the years. HOWEVER, last year I called a bird in for my nephew in the morning and was going for mine later. I called three toms in and yep couldn't see their eyes and he got away. Next morning I called two off the roost and yep when I shot I saw the whiskers flinch and he got away. Just remember to bring all your gear and all your experience on each hunt. Being too confident can be just as bad as under confident!