You will also avoid potential liability for a. selling an "intrinsically unsafe" product if something bad happens or b. something bad happens after the purchaser modifies the barrel. Selling the barrels "as is" is no protection.
Besides the liability, you could potentially recoup the gauge cost by avoiding the return shipping charges when someone discovers they've been sent a honed, unsafe set.
If the statement about potential liability for selling old barrels "as is" was true, no one would ever sell a junk gun... or junk car... or junk anything. Even perfectly sound barrels sometimes blow up. I'd be interested to hear of even one actual case where someone was held liable for the blow-up of either a gun or barrels that were sold "as is".
Is the seller of barrels with adequate wall thickness responsible for snow, mud, or wasp nests in a gun barrel? What about hot handloads or even magnum factory loads that will enter a short chamber? Who exactly, is the legal authority on what constitutes safe wall thickness?
And return shipping costs virtually always fall upon the buyer who is returning the defective item, unless there was some gross error or negligence in the description, or a prior agreement that the seller would be responsible for return shipping for items sold "as is". I don't know anyone who would make such a warranty.
