page_title: 6.5mm Grendel
section_title: External ballistics
hierarchical_section_title: 6.5mm Grendel / Performance / External ballistics
caption_attribution_description: 6.5 Grendel cartridge muzzle velocity from 24" barrel as a function of bullet weight.
context_page_description: The 6.5mm Grendel is an intermediate cartridge designed by Arne Brennan, Bill Alexander and Janne Pohjoispää as a low-recoil, high-accuracy cartridge specifically for the AR-15 platform at medium/long range. It is an improved variation of the 6.5mm PPC. Since its introduction, it has proven to be a versatile design and is now expanding out into other firearms including bolt-action rifles and the Kalashnikov system.
  The name "6.5mm Grendel" was a trademark owned by Alexander Arms until it was legally released to allow the cartridge to become SAAMI standardized.
context_section_description: As noted above, the Grendel case is very closely related to the .220 Russian case. In general, each additional grain of bullet weight will reduce muzzle velocity by 10.8 ft/s (6.1 m/s for each gram) and each additional inch of barrel length will increase muzzle velocity by 20 ft/s (2.4 m/s for each centimeter). Specific details are available as graphs derived from Alexander Arms' public domain load table linked below.
caption: Muzzle Velocity Change with Bullet Weight
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