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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
Newest AR15 Build
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<blockquote data-quote="budlight" data-source="post: 1099185" data-attributes="member: 2939"><p>I don't think that you understand the relationship of barrel length, increased velocity and twist rate.</p><p></p><p>I was able to reduce the powder amount to where the velocity out of my 20 inch 1:7 to 2800 fps which is a typical 16 inch 55 gr velocity and the bullet groups were manageable. The bullets went correctly through the paper So I bought 75 grain and it shoots very well. It is kind of stupid to dumb down velocity just to shoot a lighter weight bullet so I retired that 1:7 upper and just started buying 20 and later 24 and 18 inch 1:9. they shoot very small groups using those same bulk 55 gr HP's, Soft points, and FMJ</p></blockquote><p></p>
[QUOTE="budlight, post: 1099185, member: 2939"] I don't think that you understand the relationship of barrel length, increased velocity and twist rate. I was able to reduce the powder amount to where the velocity out of my 20 inch 1:7 to 2800 fps which is a typical 16 inch 55 gr velocity and the bullet groups were manageable. The bullets went correctly through the paper So I bought 75 grain and it shoots very well. It is kind of stupid to dumb down velocity just to shoot a lighter weight bullet so I retired that 1:7 upper and just started buying 20 and later 24 and 18 inch 1:9. they shoot very small groups using those same bulk 55 gr HP's, Soft points, and FMJ [/QUOTE]
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Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
Newest AR15 Build
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