LiveLife
Member
It's interesting to point out that RMR decided to go with 11-12 BHN lead alloy for their bullet core.
I think some plated bullet manufacturers use softer swaged lead for bullet core. Perhaps the harder 11-12 BHN lead alloy maintains neck tension better when the bullet is seated and taper crimp applied instead of being squished? If that's the case, more consistent neck tension would produce more consistent chamber pressures.... harder lead core (11-12 BHN) than any plated bullet company that we know of.