Slugz is correct. I have 3 basic rifles I use for big game hunting, all are set up with Leupolds and have ballistic turrets on each one. My Ruger M77 is a 25-06 and I only use one bullet (117gr Sierra Game King BT) and one load for deer and antelope. I also shoot a sporterized military 03 Springfield for deer and elk with one load (150 gr Sierra Game king BT). My elk/moose rifle is a custom commercial Mauser action in .300 Wby , use one load with a 180 gr Nosler Partition. I have spent many hours at the range developing loads for each one. I have also shot a lot of game with them too. This system works for me, but may not be for everyone.