More info:
Look at table 1
Primer Diameter(mm) Peak Pressure (kPa) SD(kPa) SD (%)
Fed 210M 5.33 2908 223 7.7%
Fed 215M 5.33 3811 192 5.0%
CCI 200 5.33 2561 270 10.7%
CCI 250 5.33 3587 404 11.3%
Rem 7 ½ 4.45 2303 186 8.1%
Fed 205 4.45 1469 103 7.1%
CCI 450 4.45 1602 104 6.5%
Fed 205M 4.45 1434 103 7.2%
Table 1: Peak pressure averages and standard deviations from the mean (SD) with a sample size of 10. kPa is kilo Pascals, a pressure measurement, 6895 Pascals = 1 psi
These primers all used lead styphnate as an explosive component. Blast waves were recorded using transducers - no variations in ammo loading procedures or components.
From Wikipedia
"Brisance is the shattering capability of a high explosive determined mainly by its detonation pressure." This is commonly measured by the sand crush test.
The transducers described in the paper measure primer blast waves. Heat generated by explosive energy would be directly proportional to brisance or blast detonation pressure.
I think Fed 215M's are the absolute best primers for large capacity cartridges loaded with lots of slow burning powders having pressures over 60 K psi.
I use my good stash of CCI 34's (not shown on table) with Staball HD in 6.5-06 to .300 WM with heavy for caliber bullets - no problems.
