On Saturday, the 16th, I thought I was bringing everything I'd need. Everything! I knew I would be shooting my Mosin-Nagant with surplus Bulgarian ammo and had packed a cleaning kit, including a spray bottle of Simple Green to squirt down the barrel after shooting. I forgot to bring the cleaning stuff. OK. No real problem. It's only a couple of hours to get home and I'll do it then... When I got home, the grandkids were visiting. OK. No real problem. After they go home, I'll do it then... After they left, I realized I'd missed cocktail hour and then it was time for dinner. OK. No real problem. After I clean up the kitchen, I'll do it then... (She cooks; I clean. I cook; she cleans. That night, she cooked.) Anyway, it was late Sunday afternoon before I finally got around to cleaning guns. Did the Simple Green thing and ran a patch thru the barrel. It came out black. Not gray or spotted with black, but solid black! Nasty looking and it was only the first of many, many, many patches..... until I finally got a clean one. I ended up spending a good hour and a half cleaning that old rifle. That doesn't include two half-hours waiting for the bore cleaner to do its stuff. I wore out a brass bore brush, I think I killed a bore snake, I used about half a package of patches and quite a lot of various cleaning and lubricating compounds. Way too much work that could have been avoided. Therefore, take this as a warning to all youse peoples who has old guns an' shoots corrosive ammo... DO NOT PUT OFF CLEANING!!!!! The residue of that crappy ammo is difficult to remove once it sets up. Very difficult!