New Sierra MatchKing Bullets in 243 Caliber, 6mm

    “The Bulletsmiths” from Sierra seem to have a new 243 caliber (6 mm) bullet incoming.

    Someone, most likely an avid reloader, noticed that Midway USA were listing the new bullet as “in stock soon”.

    You can find the link here.

    Sierra MatchKing Bullets 243 Caliber, 6mm (243 Diameter) 110 Grain Hollow Point Boat Tail.

    What makes this bullet special is its low drag, Sierra claim a G1 Ballistic Coefficient (BC) of 0.617.

    There’s no information about G7 BC yet.

    Below: high speed, low drag


    The facts below are according to Midway.

    Diameter 0.243 Inches
    Quantity 500 Bullet
    Grain Weight 110 Grains
    Bullet Style Jacketed Hollow Point Boat Tail
    Lead Free No
    Ballistic Coefficient 0.617
    Cannelure No
    Bullet Coating Non-Coated
    Bullet Caliber 6mm, 243 Caliber
    Sectional Density 0.266
    Recommended Twist Rate   1 in 7″ or Faster


    Prices from Midway are as follows:

    I’m sure the prices will be forgotten once you get the satisfaction of hitting your target…
    One difficulty will be to find a “fast” barrel that can stabilize this bullet, the recommended twist rate of 1 in 7″ or faster might not be too common.
    If the Ruger Precision Rifle can stabilize it, I guess it will be a popular bullet very soon. RPR’s twist rate is 1 in 7,7″, but the 243 was only available in version 1 which is now discontinued and recently removed from Ruger’s homepage.
    Some of Sierra’s other HPBT Matchkings in 6 mm.

    You can find more information over at

    Eric B

    Ex-Arctic Ranger. Competitive practical shooter and hunter with a European focus. Always ready to increase my collection of modern semi-automatics, optics, thermals and suppressors. TCCC Certified. Occasionaly seen in a 6×6 Bug Out Vehicle, always with a big smile.