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20 Rounds of .223 Ammo by Federal Sierra Match King - 77gr HPBT

102 Ready to Ship

  • $22.50 each if you buy 10 and save 4%

Ammo Overview

Quantity - 20 rounds
Manufacturer - Federal Premium
Bullets - 77 grain boat tail hollow point (BTHP)
Casings - Boxer-primed brass

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Posted On: 9/27/11 By: Anonymous

A: Yes, this Federal 77gr BTHP ammunition is loaded to "magazine length" and will fit in AR15/M16 magazines.

Posted On: 9/27/11 By: Marc

A: This depends on several factors. The longer the barrel of your AR-15, the greater the chances are that it will stabilize longer projectiles, with a 20" or longer barrel being a much better choice than a 14.5" or 16" barrel. Also, the twist may not be exactly 1 in 9 - some 1 in 9 barrels are actually 1 turn in 8.5 inches, or 1 turn in 9.5 inches, depending on production variations. If your rifle has a long enough barrel and/or a slightly faster twist rate and does stabilize 77 grain projectiles at 100 yards, it might not stabilize them at 200, 300, or even out to 600 yards, which these Federal 77gr HPBT cartridges are easily capable of reaching out to if properly stabilized. You might find that your rifle's barrel performs better with 69gr HPBT or 75gr HPBT projectiles.

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