They make a air powered device that blows compressed air into the hole where the spark goes in. Friend of mine has one. He doesn't like to clean his gun. If he ends up not shooting it during the season, that is what he does. How come you don't take it to a gunsmith? Probly have it out in 5 minutes.
Smitty, that's what killed a lot of men on both sides in the Civil War, in the heat of the battle & getting up & moving & such they would sometimes double load & those barrels were never built for that. Even if it's a new one I would never try that.