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Rifles, Reloading, Optics, Equipment
Reloading
.223 vs. 5.56
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<blockquote data-quote="Doom2" data-source="post: 2800244" data-attributes="member: 108323"><p>I played around with GRT changing case volume and load in 223 with 77NCC and N135. Here is what I found</p><p></p><p>Change case volume 1 gr H2O change velocity about 40 fps.</p><p>Change load to correct velocity back to original ~0.4 gr.</p><p></p><p>This ought to give some perspective in the 223 on what changing case volume will do. As for pressure it went from roughly 50K to 54K psi with a 1 grain decrease in volume.</p></blockquote><p></p>
[QUOTE="Doom2, post: 2800244, member: 108323"] I played around with GRT changing case volume and load in 223 with 77NCC and N135. Here is what I found Change case volume 1 gr H2O change velocity about 40 fps. Change load to correct velocity back to original ~0.4 gr. This ought to give some perspective in the 223 on what changing case volume will do. As for pressure it went from roughly 50K to 54K psi with a 1 grain decrease in volume. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
.223 vs. 5.56
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