The Kral Bighorn has a 580mm/22.8" barrel. The choke on the .25 is a touch tight but shoots pellets well anyway. I decided to make the shroud functional so my solution was remove most of that choke (Lost no speed after). Take a bad oversized .357 barrel end and re-thread both 1/2x20 (inside the .357 section on to the .25 barrel) to mate up, keep the overall factory length and then drill a vent hole through the .357 new end so it uses the shroud to both tension and hush it down.
