?? Plug the flash hole, fill it with a cleaner that won’t rot the rifling, let it sit for a day or two and then scrub it. Failing that, B Hoyt, he has done 3 bores for me and they are now shooters. He gets my vote! Call early 730/8am. Tell him the issue and let him work his magic. Tell him you want to shoot balls. He’s a shooter also and knows his stuffWould like to be able to hunt deer and elk with it. Looking at the rebore option, or maybe a drop in 54 caliber barrel. This is 55 yards with a 370gr Maxi over 70gr of FFFg last weekend.