IF YOU WANT A SOFTWARE THAT SAVES SHELLS FOR SIGHTING IN YOUR RIFLE,GO TO REMINGTON WEBSITE AND DOWNLOAD " REMINGTON SHOOT" .YOU SELECT YOUR BULLET TYPE AND SIZE ,PICK THE RANGE YOU WANT IT SIGHTED FOR AND IT WILL SHOW YOU A TRAJECTORY GRAPH THAT YOU CAN SIGHT IN AT CLOSE RANGE TO BE ON AT THE RANGE YOU SIGHTED IN FOR.IT WORKS AND IT IS FREE!