Found an old batch of 9mm 124 gr. FMJ-RN last week, appeared to have normal copper alloy jackets. I use a magnetic parts dish for a bullet tray with he 550. Got to the bottom, the last layer was sticking to the tray. These were probably from Widners, and probably Israeli from a good while back. Shot a box of the handloads in my 239-9 yesterday, saw no difference. I would not be surprised if some of the Russian pistol ammo has a steel jacket with a copper plating over it.
Posts: 1430 | Location: North Carolina | Registered: June 16, 2004
In addition to using a steel casing, certain types of Wolf rifle cartridges use steel-jacketed bullets, which are often copper-plated and cosmetically similar to standard copper-jacketed bullets. The copper exterior of the bullet is approximately .005 inch thick, with an underlying steel jacket of about 1/32 inch thick. This type of ammunition is labeled "bimetal".