I had a Holland 465 that needed to have the hinge pin replaced because of wear. This rifle had shot over 1000 Elephants in the hands of it's previous owner. Prior to that is a question as it was made in 1912 and sold to a farmer in Natal and somehow ended up in Zambia.

I have had a couple of Greener shotty's that needed pins replaced and have had a Greener in 360#2 that a prior owner had shimmed the hook.

I have never owned a rising bite Rigby so can't comment but I think it probably would eventually loosen up also after a few thousand rounds.

I am not impressed by the Greener crossbolt or the Kirsten lock for keeping tightness. I have seen to many of each loosen up at the bolt and in fact have a Drilling with Kirsten bolt that needs to be tightened right now.