Q&A for Hornady Custom 6.8 SPC 100 Grain Gilding Metal eXpanding Centerfire Rifle Ammunition

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Hornady Custom 6.8 SPC 100 Grain Gilding Metal eXpanding Centerfire Rifle Ammunition

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Jude Hays, guest, from TX, United States, asked on January 26, 2022

Do 6.8 SPC and 5.56, share the same lower receivers? Also, what is the ballistic difference?

Expert Answer

Answered by Hunter, Gear Expert, from OH, United States, on August 08, 2023

6.8 SPC and 5.56 both use small frame AR lowers. The ballistic difference depends on a few factors but comparing the Hornady 5.56 55gr CX bullet with a .270 BC to the Hornady 6.8 SPC 100gr CX bullet with a .262 BC, the 5.56 has a velocity of 2781fps and energy of 944 ft/lb at 100 yards while the 6.8 SPC has a velocity of 2227fps and energy of 1102 ft/lb at 100 yards.

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Q&A for Hornady Custom 6.8 SPC 100 Grain Gilding Metal eXpanding Centerfire Rifle Ammunition — 1 Questions & 1 Answers

Do 6.8 SPC and 5.56, share the same lower receivers? Also, what is the ballistic difference?

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Q&A for Hornady Custom 6.8 SPC 100 Grain Gilding Metal eXpanding Centerfire Rifle Ammunition — 1 Questions & 1 Answers

Do 6.8 SPC and 5.56, share the same lower receivers? Also, what is the ballistic difference?