As we have all been noticing the last year or two, Sig has been making a big push into other industries beyond just firearms manufacturing. They now do scopes, range finders, and even ammunition. Sig has just announced that they have added a new 308 Winchester match loading to their ammo line up. The 308 load joins their existing 300 Win Mag (190gr) and 223 Rem (77gr) loads in their match ammunition offerings. This load uses the standard Sierra Matchking 168gr bullet launched at 2700fps, which is a little faster than most other manufacturers using the same bullet.



Mel Ewing

Yep, sure do:
.462 @ 2600 fps and above
.447 between 2600 and 2100 fps
.424 between 2100 and 1600 fps
.405 @ 1600 fps and below


According to Sierra’s bullet chart the HPBTMK is .435 and the new MKT is .535

R type

“According to Sierra’s bullet chart the HPBTMK is .435 and the new MKT is .535” and bullet speed for those number sis?

Mel Ewing

Yep, it is on our list to test with the next round of 168gr match ammo testing

Paul M.

Bryan Litz gives a G7 BC of .218 for the 168gr SMK. The G7 method better describes the behavior of boat-tail bullets than the G1 method, and is much less sensitive to velocity.


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