I ended up sending the ML to a friend who has a machine shop.
WE soaked the obstruction with fine oil over night but physically it did not budge when we tried to push it out the next morning. He then made a sleeve to protect the rifling and partially drilled out the one bullet from the breech and drew it out, then pushed the single remaining bullet/sabot out the back.
The Barnes 290 grain TSX bullets with the yellows sabots are REAL tight in a stainless Green Mountain barrel.
Thanks for you for all the ideas.
