Try Varsol / mineral spirits.
Will try both these methods tonight. Thank you!If the acetone is helping soften the glue try to soak the affected area overnight if you can, or wrap it in an acetone soaked rag. I'd leave it outside of you go this route because of the smell.
I will order it just in case. Thanks for the suggestion.Lee Valley sells little bottles of 'Super Solvent' which works amazingly well on any cyanoacrylate (CA) glue, or 'super' glue.
https://www.leevalley.com/en-ca/shop/tools/supplies/adhesives/glue/20025-super-solvent?item=56Z9501
It can cause some varnishes and paints to react badly but is usually okay, best to test first if a finish is in question. I encounter this problem because some folks insist on trying to glue cracks on their kid's violins with Krazy Glue or similar, find the repair fails either immediately or shortly after, and then I'm faced with not only cleaning and properly gluing and reinforcing the crack, but removing the CA from the finish because they weren't tidy about it at all. But on a shotgun barrel it should be fine.
Forgot to mention - I don't think there's any acetone in this stuff. Has no smell. Behaves more or less like water. Wouldn't want to drink it nor get it in my eye, but it's been fairly harmless on skin. Excellent for removing CA, even long-dried stuff, with a bit of paper towel soaked in the liquid.
I second Goo Gone worth a tryThank you. I haven't but I can. I updated the pic in the first post. Can I use it on the blueing without damaging it?
^^^^^^thisop, any luck yet?
I'm going at it with Acetone, Rob. Used a quarter of the bottle already. It almost feels like the glue has become baked on permanently! Feels like powder coated and dried to a sheen! Out of goo off like Suther suggested, going to get some and try that route among other suggestions - I had some success getting some glue off from in between the grooves on top of the rib using a scalpel as Magellan suggested and slowly go into each groove under a magnifying glass. I will try again some more tonight.
I am using this one.
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will go by Home Depot and pick up some.