So much depends on the individual rifle involved. My friend and I both have Devine M1A's only 4 numbers apart in the serial numbers. We both use the same charge of 4895. Both rifles will shoot dime size groups at 100 yards. I use the 168 SMK and he uses the Sierra 165 JHP. If we switch the loads between the rifles both of our groups will open up to around 2 inches at 100 yards. You just have to find a load your particular rifle likes.