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Created page with "<!-- NOTE to Editors: We request that you please DO NOT change or remove ANYTHING in the Second Amendment-Gun rights-related Template links preceded with "{{", such as {{..."
<!-- NOTE to Editors: We request that you please DO NOT change or remove ANYTHING in the [[Second Amendment]]-[[Gun rights]]-related Template links preceded with "{{", such as {{Template:Firearms_topics}} or {{Template:Firearms SAMMI glossary quotation}}. Thank you. -->'''Sectional density''' (SD) ''' is a [[Glossary of Firearms and Second Amendment Terms|firearms term]] related to [[ammunition]]. According to [[:Category:Gun Writers|gun writer]] Matthew Boyd, sectional [[density]] is "the [[diameter]] to weight [[ratio]] of a [[bullet]]. Calculated by dividing the bullet's weight in [[pound]]s by its [[diameter]] in inches. Sectional density is important because, all other factors being equal, the higher the SD the better the [[penetration]] of the bullet."<ref> Boyd, Matthew J., "[http://www.chuckhawks.com/ Basic firearms Terminology Defined]." [[Guns and Shooting Online]] - [[Chuck Hawks]].com, 2012. Accessed February 19, 2015</ref>
==Bibliography - Further Reading==
* [[Boston T. Party|Party, Boston T.]], ''[[Boston's Gun Bible]]''. [[Wyoming]]: [[American Redoubt]] [[Javelin Press]], 2009 revision to 2002 edition. Chapter 9: [[Combat rifle cartridge]]s.
==References==
<references/>
{{Template:Ammunition topics}}
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{{Template:Firearms topics}}
[[Category : Handloading]]
[[Category : Ammunition]]
[[Category : Firearms Glossary]]
[[Category : Firearms]]
[[Category : Engineering]]
==Bibliography - Further Reading==
* [[Boston T. Party|Party, Boston T.]], ''[[Boston's Gun Bible]]''. [[Wyoming]]: [[American Redoubt]] [[Javelin Press]], 2009 revision to 2002 edition. Chapter 9: [[Combat rifle cartridge]]s.
==References==
<references/>
{{Template:Ammunition topics}}
----
{{Template:Firearms topics}}
[[Category : Handloading]]
[[Category : Ammunition]]
[[Category : Firearms Glossary]]
[[Category : Firearms]]
[[Category : Engineering]]