Huh. I thought FMJ was totally covered with no lead showing. I learn something new here every day. Thanks. I like TMJ because my guns don't get as dirty.FMJ- Full metal jacket- lead core is surrounded by a jacket of gilding metal (cupro-nickel alloy), but lead is exposed at base of bullet.
TMJ- Total Metal Jacket- no exposed lead, totally enclosed core. Control of airborne lead.