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| balsrc = <ref name="Hornady-6mm-ARC-info-page">[https://www.hornady.com/6mmarc 6mm ARC - Hornady Manufacturing, Inc]</ref>
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The '''6 mm Advanced Rifle Cartridge''' (6×38mm), or '''6mm ARC''' for short, is a [[6mm caliber|6mm (.243) caliber]] [[intermediate cartridge|intermediate]] [[rifle cartridge]] introduced by [[Hornady]] in 2020, as a low-[[recoil]], high-[[accuracy]] [[long range shooting|long-range]] [[cartridge (firearms)|cartridge]], designed for use in the [[AR-15]] platform
== Compatibility with the AR-15 ==▼
For an ordinary AR-15 rifle chambered for the [[.223 Remington|.223 Rem]]/[[5.56mm NATO]], a new [[gun barrel|barrel]], [[magazine (firearms)|magazine]] and [[bolt (firearms)|bolt]] are required to convert to the 6mm ARC.<ref>[https://www.gunsamerica.com/digest/hornadys-new-6mm-arc-odin-works-barrels-first-field-tests/ Hornady's NEW 6mm ARC & Odin Work's Barrels - www.gunsamerica.com]</ref> The 6mm ARC utilizes the same bolt head size as the [[6.5mm Grendel]], and 6.5mm Grendel-compatible [[STANAG magazine|AR-pattern]] [[box magazine]]s have also been used successfully with the 6mm ARC.<ref>[https://gununiversity.com/6mm-arc-review/ gununiversity.com | 6mm ARC Released / Hands-On Testing and Comparisons, by Ryan Cleckner 3 June 2020]</ref> The 6mm ARC therefore can also be a suitable chambering for shorter "mini-action" [[bolt-action rifle]]s.{{Cn|date=September 2021}}▼
Several firearm manufacturers have announced that they will be offering factory rifles chambered in the 6mm ARC.<ref>[https://www.tactical-life.com/firearms/rifles/rifles-hornady-6mm-arc/ “With the announcement of the Hornady 6mm ARC cartridge, an incredible 22 companies plan rifles for the consumer market, with more on the way.” – Tactical Life Gun Magazine: Gun News and Gun Reviews]</ref><ref>[https://www.ammoland.com/2020/06/cmmg-announces-new-rifles-chambered-in-6mm-arc/ CMMG Announces New Rifles Chambered in 6mm ARC]</ref>▼
== Diagram ==▼
[[File:6mm-Advanced-Rifle-Cartridge-6mm-ARC.png]]▼
==Performance==
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An additional likely performance handicap, applicable to any magazine-fed firearm, will be to the maximum round length that can be used in its magazine. A shorter maximum cartridge overall length (COAL) lowers powder capacity, and hence potential performance, due to the bullet’s parasitic intrusion into the case. Due to the length of the heavy bullets the 6 mm ARC is designed to use and its limited COAL, this is an issue unless over-length rounds are single-fed.
▲== Diagram ==
▲[[File:6mm-Advanced-Rifle-Cartridge-6mm-ARC.png]]
▲== Compatibility with the AR-15 ==
▲For an ordinary AR-15 rifle chambered for the [[.223 Remington|.223 Rem]]/[[5.56mm NATO]], a new [[gun barrel|barrel]], [[magazine (firearms)|magazine]] and [[bolt (firearms)|bolt]] are required to convert to the 6mm ARC.<ref>[https://www.gunsamerica.com/digest/hornadys-new-6mm-arc-odin-works-barrels-first-field-tests/ Hornady's NEW 6mm ARC & Odin Work's Barrels - www.gunsamerica.com]</ref> The 6mm ARC utilizes the same bolt head size as the [[6.5mm Grendel]], and 6.5mm Grendel-compatible [[STANAG magazine|AR-pattern]] [[box magazine]]s have also been used successfully with the 6mm ARC.<ref>[https://gununiversity.com/6mm-arc-review/ gununiversity.com | 6mm ARC Released / Hands-On Testing and Comparisons, by Ryan Cleckner 3 June 2020]</ref> The 6mm ARC therefore can also be a suitable chambering for shorter "mini-action" [[bolt-action rifle]]s.{{Cn|date=September 2021}}
▲Several firearm manufacturers have announced that they will be offering factory rifles chambered in the 6mm ARC.<ref>[https://www.tactical-life.com/firearms/rifles/rifles-hornady-6mm-arc/ “With the announcement of the Hornady 6mm ARC cartridge, an incredible 22 companies plan rifles for the consumer market, with more on the way.” – Tactical Life Gun Magazine: Gun News and Gun Reviews]</ref><ref>[https://www.ammoland.com/2020/06/cmmg-announces-new-rifles-chambered-in-6mm-arc/ CMMG Announces New Rifles Chambered in 6mm ARC]</ref>
==See also==
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