I don’t remember the specifics, but what I read said it started further than 10 yards and ended up beyond 20.
I have no issues with people shooting with irons. I still carry guns that have irons only.
I was once in the *RDS are the devil* group, but having transitioned to them over the past couple years, I’m a fan. They make seeing the target easier, which means I can focus less on sight alignment and more on making the gun go bang.
