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6.8mm Remington SPC. NDIA Small Arms Symposium Las Vegas May 11, 2004 PRESENTED BY GREG DENNISON SENIOR RESEARCH ENGINEER REMINGTON ARMS COMPANY, INC. 6.8mm Remington SPC. 6.8mm Rem SPC – 115 gr Sierra HPBT 6.8mm Rem SPC – 115 gr Hornady OTM 5.56mm NATO – 77 gr Sierra HPBTMK
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6.8mm Remington SPC NDIA Small Arms Symposium Las Vegas May 11, 2004 PRESENTED BY GREG DENNISON SENIOR RESEARCH ENGINEER REMINGTON ARMS COMPANY, INC
6.8mm Remington SPC 6.8mm Rem SPC – 115 gr Sierra HPBT 6.8mm Rem SPC – 115 gr Hornady OTM 5.56mm NATO – 77 gr Sierra HPBTMK 5.56mm NATO – M855, 62 gr FMJ
6.8mm Remington SPCBrief History • Developed by Remington using internal funds • 6.8mm Remington SPC cartridge developed to provide increased lethality and better long range capability than current 5.56mm NATO or 7.62x39 through higher energies • Shell body diameter is larger than 5.56mm NATO but smaller than 7.62x39 • Cartridge length same as 5.56mm NATO • Modular approach of M16 weapons family allows use of 6.8mm Rem SPC cartridge with dedicated upper receiver and magazine
6.8mm Remington SPCSpecifications • Available with 115 gr Hornady Open-tipped match (OTM), 115 gr Sierra HPBT Match and 115 gr FMJ • Muzzle velocity of 2800 ft/s from a 24” barrel, 2625 ft/s from 16” barrel and 2475 ft/s from a 12” barrel • 1 MOA dispersion typical • Chamber pressure is 55,000 psi MAP via conformal transducer • 28 rds of 6.8mm Rem SPC – 115 gr OTM weighs ~1.06 lbm • 30 rds 5.56mm NATO – 62 gr FMJ weighs ~0.76 lbm • 20 rds 7.62mm NATO – 150 gr FMJ weighs ~1.07 lbm
6.8mm Remington SPCPerformance Comparisons – Velocity vs. Range
6.8mm Remington SPCPerformance Comparisons – Trajectory vs. Range
6.8mm Remington SPCPerformance Comparisons – Wind Drift vs. Range
6.8mm Remington SPCPerformance Comparisons – Energy vs. Range
6.8mm Remington SPCTerminal Performance at 50 yds 6.8mm Rem SPC – 115 gr OTM From 16” barrel Barrett Upper, velocity@12’ = 2608 ft/s 5.56 NATO - M855 From 18” barrel, velocity@12’ = 3071 ft/s
6.8mm Remington SPCTerminal Performance at 50 yds 6.8mm Rem SPC – 115 gr OTM From 16” barrel Barrett upper, velocity@12’ = 2608 ft/s 5.56 NATO – 77 gr Sierra HPBTMK From 18” barrel, velocity@12’ = 2760 ft/s
6.8mm Remington SPCTerminal Performance at 50 yds 6.8mm Rem SPC – 115 gr OTM From 16” barrel Barrett Upper, velocity@12’ = 2608 ft/s 6.8mm Rem SPC – 115 gr OTM From 16” barrel Barrett upper, velocity@12’ = 2608 ft/s 5.56 NATO – 77 gr Sierra HPBTMK From 18” barrel, velocity@12’ = 2760 ft/s 5.56 NATO - M855 From 18” barrel, velocity@12’ = 3071 ft/s
6.8mm Remington SPCTerminal Performance at 25 feet 6.8mm Rem SPC – 115 gr OTM From 12” barrel Barrett upper, velocity@12’ = 2445 ft/s 5.56 NATO - M855 From 14” barrel M4, velocity@12’ = 2900 ft/s
6.8mm Remington SPCTerminal Performance at 25 feet 6.8mm Rem SPC – 115 gr OTM From 12” barrel Barrett upper, velocity@12’ = 2445 ft/s 5.56 NATO – 77 gr Sierra HPBTMK From 14” barrel M4, velocity@12’ = 2613 ft/s
6.8mm Remington SPCTerminal Performance at 25 feet 6.8mm Rem SPC – 115 gr OTM From 12” barrel Barrett upper, velocity@12’ = 2445 ft/s 6.8mm Rem SPC – 115 gr OTM From 12” barrel Barrett upper, velocity@12’ = 2445 ft/s 5.56 NATO - M855 From 14” barrel M4, velocity@12’ = 2900 ft/s 5.56 NATO – 77 gr Sierra HPBTMK From 14” barrel M4, velocity@12’ = 2613 ft/s
6.8mm Remington SPCSummary • 6.8mm Rem SPC can be used with existing M16/M4 lowers with dedicated upper receiver and magazines • 6.8mm Rem SPC offers higher energy for improved down range performance versus 5.56mm NATO and 7.62x39 • Terminal performance in gelatin has been illustrated at 25 feet with short barreled weapons and at 50 yds with intermediate length barreled weapons • 115 gr Hornady OTM provides for greater and more immediate temporary expansion cavity • 6.8mm Rem SPC has been submitted to SAAMI