I have rir and my older roo keeps the younger in line. I think it helps if there is an established male in teaching the younger males how they should behave. Reggie, my older roo will stomp the snot out of Jr. (his son). I have 9 hens and plan to use Jr on some of them at a later date. By the time this happens he will have settled some and learned he needs to court the girls before doing his job.
I went through several roos that (rir) I would have to repeatedly remind who was boss. Reggie only tried me once or twice and is quite happy to walk the other way when a person comes around. Jr is walking in his footsteps.
I have one BPR roo that is nasty as all get out and as soon as I get a roo chick to take his place, he is going in the soup pot. He is in a breeder pen with my one hen so it isn't so much an issue. If he had free range he would already be history. I think if I had gotten him as a youngster, he would not be so mean.