Large primer will essentially weaken the case head a bit, increasing the likelihood of blown out primer pockets due to thinner wall. For this reason, when I am pushing pressure, I favor small rifle primers for these smaller powder capacity cartridges. That being said small rifle primers vary a lot within themselves. Thickness of the cups is one variation along with hardness that will determine max pressure suitability along with force required by the firing pin to successfully fire the primer.
Then some primers fire hotter than others. Certain primers tend to work better with ball powders while others work perhaps a bit better with extruded powders.
See link for your consideration. http://www.jamescalhoon.com/primers_and_pressure.php
Then some primers fire hotter than others. Certain primers tend to work better with ball powders while others work perhaps a bit better with extruded powders.
See link for your consideration. http://www.jamescalhoon.com/primers_and_pressure.php