I DON' T KNOW WHAT HEVISHOT HAS IN IT BUT IT IS FAR BETTER IN MY GUN.LIKE BOBGOBBLL2 STATED,I HAVE KILLED DOZENS OF TURKEYS WITH WIN. AND FED. LEAD BUT YOU HAVE TO SHOOT THE HEVISHOT TO BELIEVE IT.I HAVE KILLED MANY TURKEYS OVER 40 YDS.WITH TOTAL CONFIDENCE WITH LEAD SHOT BUT YOU SHOULD TREAT YOURSELF TO A BETTER LOAD.