Sandlapper , these dealers have a combined maybe 2000-3000 guns on the internet at the moment. I cannot believe that they don't have bore, chamber, and wall thickness tools, which might cost $2-3 hundred total, as they would surely drag them out if you were selling to them. I guess they are afraid to let the potential buyer know, or sadly, maybe just too lazy. Surely they understand that if they could report good measurements to the potential buyer, the guns might sell easier or bring more at auction.