Soaked the bore from the chamber end in Du Pont teflon penetrant for 15 minutes. Took a 1/4" steel dowel, wrapped duct tape at one end and 6" below that until the wrapped sections mic'd .290"
Inserted from muzzle, and after about a dozen hard whacks the bullet came out. After cleaning a visual inspection from both ends looks good. Best I can manage without a bore scope.