I found some .223 at the shooting range with a small dent on the sides. They look like slight dents from the loading or ejection process when shot is fired. Are these safe to reload???
This can be quite common when shooting an AR. My target AR does it on occasion. Small dents won't have any effect as long as the other aspects of the case are sound.
As long as the brass does not have a sharp crease in the dent area you can run them through the FL sizing die and shoot them just like any other brass.