Bought one of the 22rf BSA martini's some years back. Talk about copper fouling. And large lumps of leading. All the bore brushing I did removed the copper fouling(green color on patches with Hoppes. Installed a new cocking lever and wanted to check the firing pin strike. Had some old Montgomery and Wards ammo. First round fired showed that the firing pin strike was right where it was supposed to be. So fired a few more rounds to double check and all were perfect. Took it back inside and ran a couple patches to clean it and the lumps were gone. Then used a one piece cleaning rod and bronze bore brush with a few passes. Nothing on the patches. Was I surprised. This particular martini has the Canadian ownership Capital C with an arrow inside the C. Probably going to send it out and have it drilled and tapped so I can mount a scope on it. But with covid all local ranges are closed. So looks like I won't to shoot it for a long time. Frank