.22 Cal / 5.56mm 77 Gr. TMK

.22 Cal / 5.56mm 77 Gr. TMK


Sierra has enhanced a segment of the MatchKing line by adding the acetal resin tip, thus crowning the Tipped MatchKing (TMK) bullet line. The major advantage of adding a tip to the bullet is the reduction of drag, producing a more favorable ballistic coefficient. Another benefit is reliable feeding in magazine fed firearms. The 77 grain Tipped MatchKing (TMK) allows seating to an OAL that permits cartridges to be loaded into M16/AR15 magazines.

While they are recognized around the world for record-setting accuracy, MatchKing® and Tipped MatchKing® bullets are not recommended for most hunting applications. Although MatchKing® and Tipped MatchKing® bullets are commonly used for varmint hunting, their design will not provide the same reliable explosive expansion at equivalent velocities in varmints compared to their lightly jacketed Hornet, Blitz or Varminter counterparts.

The #7177 was introduced in January 2015.

This bullet requires a barrel twist rate of 1×8” or faster.

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Additional information

Weight 1.15 lbs
Diameter (inches)


Weight (grains)

77 Gr.

Sectional Density


Ballistic Coefficients and Velocity Ranges

.420 @ 2400 fps and above .415 between 2400 and 2000 fps .395 between 2000 and 1750 fps .380 @ 1750 fps and below

Box Count

100 Bullets, 500 Bullets