I've used Lapua on my .308 ammo and have had to throw a bunch away because of expended primer pockets. Before I "knew better". All would go boom when you puled he trigger, but a lot of them blew the primer out. However, I started using some Federal primers that are slightly larger than the Winchesters I'd been using and got a little more life out of them. I now know to reduce .308 loads 1.5gr. This after the water test. Next is to chrono Lapua loads to Other brass loads to compare muzzle velocity.