Accuracy is fine out to 30 yds or so. Then it's my eyes that give out. Keeping the front sight in focus while "seeing" the target sets up some variables I can't control.
Certain lighting conditions make a peep hard to use as well, but heck, I don't need to take those shots.
On the Benji, peep hole is just far enough away to almost become a halo sight. I'm always impressed how well we work those things out, and there is some interesting math to justify the hole affair. (I won't go there
Anyway, the Williams peep is clean and easy, but I would have liked some adjusters instead of needing to grab a screw driver and use a "Try and see" method for windage.
All in good clean fun!