Rock Creek Precision, Inc manufactures new ammunition in-line with best handloads around. This ammunition is used by both competitive and sport shooters who are concerned with accuracy and dependability. Each lot of Rock Creek Precision ammunition goes through extensive quality and consistency testing making sure each time you load our ammunition in your gun, you, WIN MORE.


Held to the highest possible standards in diameter and weight, the thin jacketed Matchking is word renowned for it's accuracy and dependability. The Matchking by Sierra Bullets has been used to win more target shooting competitions than all other manufacturers combind. The enhanced acetal resin tipped Tipped Matchking (TMK) offers a further reduction in drag, producing a better ballistic coefficent, along with more reliable feeding. 

.223 Rem 77gr TMK

  • You must be 21 years of age or older to purchase Ammunition. Ammunition only ships UPS ground. Due to legal and saftey regulations, ammunition is not able to be returned. Please check local laws before ordering. By ordering ammunition, you certify you are of legal age and satisfy all federal, state, and local legal/regulatory requirements to purchase this Ammunition.

  • Cartridge .223 Rem
    Quantity 120 Rounds
    Grain Weight 77 Grains
    Muzzle Velocity 2750 Feet Per Second
    Muzzle Energy 1293 Foot Pounds
    Bullet Style Polymer Tip
    Bullet Brand And Model Sierra Tipped Match King
    Lead Free No
    Case Type


    Primer                            Boxer                              
    Corrosive No
    Reloadable Yes
    G1 Ballistic Coefficient 0.42
    Sectional Density 0.219
    Velocity Rating Supersonic

1182 W FM 1885

Weatherford, TX 76088

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