I HAVE A REM 870 EXP SUPER MAG AND HAVE TAKEN SEVERAL BIRDS OVER 40 YARDS WITH 3.5X4S IN FEDERAL AND WINCHESTER USING THE REM XFULL AND SUPER FULL.I BOUGHT A STARDOT CHOKE AND SWITCHED TO REM HEVISHOT IN #4S AND YOU DON' T WANT ME TO TELL YOU HOW FAR THEY WILL KILL A TURKEY! THEY ARE AWESOME![]