I rate the 6CM! I ran a number of powder ladder tests in excess of 3100fps with Berger Hybrid 105’s and never hit pressure (26” barrel). Just choose a powder weight for the velocity you want and run with it. I ran mine at 2850fps and squeezed 2300 rounds out of my barrel (which is unheard of), but had to nurse it from about 1800 onwards.
Your issue might be in finding Lapua SRP brass though. But if you do, I got 7-8 reloads with no issue and then passed it onto a mate who has put another 3-4 reloads on it so far.
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