On a sunny bright day, when I shot a T/C peep on a Renegade I was impressive out to lets say 50 yards. But get me in the woods, deep in the alder thickets with waning early evening light ... man it was hard to see through that thing. I know I could have pulled the center aperture but my luck is, I would have lost it.
That is a heck of a load! I can see why your shoulder noticed. With my bad shoulders I have found anything over 100 grains can actually (with the wrong rifle) be painful.