380 Auto Streak Visual 100gr TMC 890 fps – 50rdsStreak Visual . 380 Auto 100gr TMC (Total Metal Case) is a unique, non incendiary "visual tracer" ammunition from Ammo Inc., featuring patented technology that allows the shooter to see the bullet's path in flight (primarily visible at night or low light; not a traditional burning tracer). Caliber: . 380 Auto (. 380 ACP) Bullet weight: 100 grains Bullet type: Total Metal Case (TMC) with proprietary visual tracer compound (non incendiary, glows via