I was talking with my Nevada gunsmith who's smithing my .30 Carbine Blackhawk. We were discussing the .30 Carbine cartridge and, well, all rimless autoloader cartridges. The point he made was interesting.
Without the ability to roll crimp these cartridges, because they're headspaced on the case mouth, you're really not getting all you can from these cartridges. Simply put, the harder it is for a bullet to escape the case, the more tightly held the bullet is, the more completely the powder will burn in the chamber and barrel. And the higher the pressure level will get.
Now here's the interesting point: he stated that best way to compensate for this is to load heavier bullets. Sound reasonable?
Without the ability to roll crimp these cartridges, because they're headspaced on the case mouth, you're really not getting all you can from these cartridges. Simply put, the harder it is for a bullet to escape the case, the more tightly held the bullet is, the more completely the powder will burn in the chamber and barrel. And the higher the pressure level will get.
Now here's the interesting point: he stated that best way to compensate for this is to load heavier bullets. Sound reasonable?
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