This is something that came out of shop a wile back, not sure if it helps:
Quote:
I realize this is just one data point but it may help. A couple years ago, I was trying to justify the added cost of the match primers. The test was simply to take the most accurate rifle in my cabinet and load parallel loads with the only difference being the primers. Here were the results:
.270 Imp., 48.5grs. Varget, Norma fire-formed .30-06 brass, Sierra 135gr MK 3.490" to ogive, 10-shot groups, 300yds.
CCI LR: 3015fps, +/- 45fps, 3.15inch
CCI BR2: 3018fps +/- 46fps, 2.90inch
Winchester LR: 3030fps, +/- 33fps, 2.91inch
Remington LR: 3055fps, +/- 21fps, 2.52inch
Federal 210: 3040fps, +/- 22fps, 2.52inch
Federal 210M: 3038fps, +/- 18fps, 2.50inch
I would not read too much into the group size since it was a pretty windy day but at least in this one instance the match primer did have a lower SD.