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Rifles, Reloading, Optics, Equipment
Reloading
Improving ES in 300 WM is it just powder selection
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<blockquote data-quote="Susquatch" data-source="post: 2078321" data-attributes="member: 31264"><p>I don't find that amazing at all. Velocity is a function of the pressure curve (among other things). A magnum primer creates a hotter initial burn but in a large case, the pressure could drop off at the final burn. Ideally, the pressure rises evenly and smoothly throughout the burn giving rise to maximum velocity as the bullet exits the bore. If you just try to imagine a pressure spike earlier in the burn when the bullet isn't even going that fast yet and a subsequent lower pressure at exit, you can easily see why a magnum primer might not produce as high a velocity as the standard primer in all cases. It's somewhat the same as the way that faster powders don't necessarily produce the highest velocity. Try plugging your data into an internal ballistics program like quickload, but make sure you read the documentation to learn how to play with primer types. It's a fun and very informative way to play with loads.</p></blockquote><p></p>
[QUOTE="Susquatch, post: 2078321, member: 31264"] I don't find that amazing at all. Velocity is a function of the pressure curve (among other things). A magnum primer creates a hotter initial burn but in a large case, the pressure could drop off at the final burn. Ideally, the pressure rises evenly and smoothly throughout the burn giving rise to maximum velocity as the bullet exits the bore. If you just try to imagine a pressure spike earlier in the burn when the bullet isn't even going that fast yet and a subsequent lower pressure at exit, you can easily see why a magnum primer might not produce as high a velocity as the standard primer in all cases. It's somewhat the same as the way that faster powders don't necessarily produce the highest velocity. Try plugging your data into an internal ballistics program like quickload, but make sure you read the documentation to learn how to play with primer types. It's a fun and very informative way to play with loads. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Improving ES in 300 WM is it just powder selection
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