Answer: hotlead

AnswerCrossword Clue
HOTLEADBullets, slangily
HOTLEAD1951 Tim Holt oater
HOTLEADDetective's breakthrough
HOTLEADPromising prospect: Colloq.
HOTLEADGunfire, in slang
HOTLEADOutput from a smoking gun or, read differently, input for TheSmokingGun.com