Home Forums Hunting & Shooting Custom Rifles & Wildcats 6.5X47 Lapua and 140 berger doing 2900 fps???

Trying to learn here. Do the small rifle primers have thicker stronger cups than large rifle size primers in general?

I would think that the primers would be the weakest part of the system. Are certain primers brands more suitable than others for these high pressur cartridges?

I understand that the smaller hole for the primer on the 6.5x47L would make the case stronger versus the other cases.