Yup, that's exactly why I later wrote in this thread:

"Putting out my own fire in this thread, I decided that although I may be able to shoot nice groups at the range in a controlled environment, I may not be able to do it under the pressure of hunting. At the range I'm always standing perpendicular to the target, my heart is not beating 150 times a minute, I'm not bending at the waist, I'm not turned 180 degrees to shoot. I think with all of that going on and not having anything in way of alignment, I might choke. So, I decided togo witha 5/16 tubeless peep. With this set-up I was still able to group 2" at 20 yards throughout all lighting conditions. My anchor points remain the same but now I have a lil bit of insurance in case the tree I'm in starts to vibrate."

I'm with you on this one because inmost lighting conditions I was able to group about 2 inches no matter if I had a small target peep, a large5/16 inch hunting peep, or no peep at all. This actually surprised the heck out of me to tell you the truth because I thought Icould group better with the target peep which I couldn't. No peep at all produced the same results.Thing with using no peep at all thoughis that if your head isn't in the exact position everytime, even if it's a 16th of an inch off, that 16th inch will turn into a few inches 20yds down range. This is why I decided that under the pressure of hunting, I'm not sure that with my yet noobness, I can duplicate what I do at the range. I owe the animal more than that so until I find myself shooting and not thinking about the peep, I'll stick with my current 5/16.