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.19-223
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|- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | .19-223 |- |- ! style="padding-right: 1em;" | Type | colspan="2" | Rifle |- ! style="padding-right: 1em;" | Place of origin | colspan="2" | USA |- |- |- |- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | Production history |- ! style="padding-right: 1em;" | Designer | colspan="2" | James Calhoon |- |- ! style="padding-right: 1em;" | Manufacturer | colspan="2" | James Calhoon |- ! style="padding-right: 1em;" | Produced | colspan="2" | 1999 |- |- mm ) mm ) mm ) mm )
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HP hp
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44 32 36 40
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Calhoon Website
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USA
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Small rifle
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1266 1194 1154 1216
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0.19
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Rifle
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3700 3800 4100 3600
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1.76
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0.373
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James Calhoon
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0.224
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Rimless, bottleneck
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0.223
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1999
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James Calhoon
n13:abstract
|- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | .19-223 |- |- ! style="padding-right: 1em;" | Type | colspan="2" | Rifle |- ! style="padding-right: 1em;" | Place of origin | colspan="2" | USA |- |- |- |- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | Production history |- ! style="padding-right: 1em;" | Designer | colspan="2" | James Calhoon |- |- ! style="padding-right: 1em;" | Manufacturer | colspan="2" | James Calhoon |- ! style="padding-right: 1em;" | Produced | colspan="2" | 1999 |- |- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | Specifications |- ! style="padding-right: 1em;" | Parent case | colspan="2" | .223 Remington |- |- ! style="padding-right: 1em;" | Bullet diameter | colspan="2" | in (mm ) |- ! style="padding-right: 1em;" | Neck diameter | colspan="2" | in (mm ) |- ! style="padding-right: 1em;" | Shoulder diameter | colspan="2" | in (mm ) |- ! style="padding-right: 1em;" | Base diameter | colspan="2" | in (mm ) |- ! style="padding-right: 1em;" | Rim diameter | colspan="2" | in (mm ) |- |- ! style="padding-right: 1em;" | Case length | colspan="2" | in (mm ) |- |- |- |- ! style="padding-right: 1em;" | Primer type | colspan="2" | Small rifle |- |- |- |- |- |- |- ! colspan="3" style="background: lightsteelblue; text-align: center; vertical-align: middle;" | Ballistic performance |- style="text-align: center; font-size: 90%; background: #DEDEDE;" cellspacing="0" cellpadding="0" ! Bullet weight/type ! Velocity ! Energy |- style="text-align: center; font-size: 90%;" | style="vertical-align:middle; border-bottom: 1px dotted #aaa; " | gr (g) hp||style="border-bottom: 1px dotted #aaa; "| ft/s (m/s) ||style="border-bottom: 1px dotted #aaa; "| ft·lbf (J) |- style="text-align: center; font-size: 90%;" | style="vertical-align:middle; border-bottom: 1px dotted #aaa; " | gr (g) HP||style="border-bottom: 1px dotted #aaa; "| ft/s (m/s) ||style="border-bottom: 1px dotted #aaa; "| ft·lbf (J) |- style="text-align: center; font-size: 90%;" | style="vertical-align:middle; border-bottom: 1px dotted #aaa; " | gr (g) HP||style="border-bottom: 1px dotted #aaa; "| ft/s (m/s) ||style="border-bottom: 1px dotted #aaa; "| ft·lbf (J) |- style="text-align: center; font-size: 90%;" | style="vertical-align:middle; border-bottom: 1px dotted #aaa; " | gr (g) HP||style="border-bottom: 1px dotted #aaa; "| ft/s (m/s) ||style="border-bottom: 1px dotted #aaa; "| ft·lbf (J) |- style="text-align: center; font-size: 90%;" |- | colspan="3" style="text-align: center; padding-top: 5px; font-size: 90%;" | Source: Calhoon Website |} The .19-223 is a .19 caliber rifle wildcat cartridge. It's the second in a set of .19 caliber rounds created by James Calhoon because of his interest in British sub-caliber rifle trials in the early 1970's. The cartridge is based on a necked-down .223 Remington cartridge. This gives higher velocity and a flatter trajectory than would be found with typical .223 loads. .19 caliber rifles have thicker rifling than .17 and .20 caliber files, which helps the barrel stay clean longer and improves barrel life.