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Chuck,
Something that I've used in the past in just such an event (well, almost) was to counter-bore the muzzle-end of the barrel, and tap for a good, old-fashioned grease zerk (they come in many diameters and thread pitches). Install a zerk in the muzzle end of the bore, then pump the bejeebers out of your grease gun, and presto! The obstructions will be forced from the bore by the pressure of the grease. Then, after removing the obstructions, use solvent to get the rest of the grease out of the bore, then evaluate if you did any permanant damage to the bore beyond what Ruger had already botched. If usable, go ahead and cut out the threads by shortening the barrel the appropriate amount and recrown the muzzle.
Finally, if all goes well, firelap that barrel (almost mandatory with any Ruger barrel), and I'll bet that it'll give you many years of good performance you thought impossible!
Hope this helps!
God Bless
Something that I've used in the past in just such an event (well, almost) was to counter-bore the muzzle-end of the barrel, and tap for a good, old-fashioned grease zerk (they come in many diameters and thread pitches). Install a zerk in the muzzle end of the bore, then pump the bejeebers out of your grease gun, and presto! The obstructions will be forced from the bore by the pressure of the grease. Then, after removing the obstructions, use solvent to get the rest of the grease out of the bore, then evaluate if you did any permanant damage to the bore beyond what Ruger had already botched. If usable, go ahead and cut out the threads by shortening the barrel the appropriate amount and recrown the muzzle.
Finally, if all goes well, firelap that barrel (almost mandatory with any Ruger barrel), and I'll bet that it'll give you many years of good performance you thought impossible!
Hope this helps!
God Bless