Well not had a responce(sic) from Bomb Doctor, another arm chair expert maybe....
Sorry old chap - been away skiing.
I am
most definitely sitting in an armchair these days... having retired from being an ATO in 2003. Does that make me an armchair expert in ammunition? Some people might say so....... but I was never one to blow their own trumpet.
But - in answer to your question: You can fire SOME solid rounds through SOME authorised chokes...all depends on the type of round/choke & shotgun. Unfortunately you can't fire Hatton type rounds through choked barrels. You'd also be wise to use a nitro proofed shotgun due to the higher pressures associated with these types of round.