Thread: Comparison of Primers: Federal 210 vs White River Energetics LR

Greetings again @30.06king,
Nice test. The closeness of the velocities between the two primers indicates that pressures are close as well. I was interested in your choice of 4 shot groups. A long time back there was an article about the minimum number of rounds needed for a meaningful indication of its precision. At the time many were starting to test with 3 shots while 5 shots remained the standard. The answer turned out to be 4 shots. This was thought to weed out some of the fluke 3 shot groups while easing the round count from 5 shot groups a little. Anyhow that .30-06 load is obviously a favourite. The low ES with either primer is what I have come to expect from my .308 rifles.
Congratulations on getting the little Garmin chrono. Tests I have read indicate this is a cracker, every handloader should have one.
Regards Grandpamac.