Sierra Bullets Publishes 6mm Creedmoor Reloading Data

6mm Creedmoor

The 6.5mm Creedmoor finally has some more published data behind it for prospective reloaders of the caliber. Sierra Bullets, the company known forย good bullets in green boxes, finally has some published data on the hot little Creedmoor.

It is interesting if you notice in the cover photo of this article that Sierra Bullets designates 6mm Creedmoor as 6mm/6.5 Creedmoor. It sounds like a combination of 6mm Creedmoor and 6.5 Creedmoor; two similar calibers, but they use entirely different bullets. The 6mm Creedmoor, not surprisingly, uses 0.243″ diameter bullets while the 6.5 Creedmoor employs 0.264″ diameter projectiles. So why the funny name? Da heck is goin’ on!

Well, since SAAMI (Sporting Arms and Ammunition Manufacturers’ Institute) has not fully approved the chamber and cartridge drawings of 6mm Creedmoor yet it is deemed a wildcat cartridge. As a result, Sierra Bullets refers to 6mm Creedmoor as “6mm/6.5 Creedmoor” for the time being.

Is it confusing? Yes.

Is it necessary? Yes, since this data will be formally appearing in Sierra Bullets’ next reloading manual, it is necessary.

The reloading data that Sierra Bullets recently published on their company blog uses a lot of popular powders you may already have at your reloading bench or should be easy to source at your local gun shop. Such handloading favorites like Varget, Benchmark, CFE 223 and H4350. It also employs bullets everywhere from a 55 Grain Blitzking to a 110 Grain Matchking.

All 9 pages that Sierra published can be read below and are available for download as a PDF on the Sierra Bullets blog.

6mm Creedmoor

6mm Creedmoor

6mm Creedmoor

6mm Creedmoor

6mm Creedmoor

6mm Creedmoor

6mm Creedmoor

6mm Creedmoor

6mm Creedmoor



The outdoors, fitness and anything related to firearms are my passions. I am a S&W Armorer, Glock Armorer, reloader and am coping with an addiction to classic S&W and Colt revolvers (by buying more revolvers). I’ve been a guest writer for Sierra Bullets and love long walks to the gun range.


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  • jonp

    1,000yrd range from an AR10 length cartridge that allows the longest bullet to be used? Sounds like a winner

    • 22winmag

      .243 WSSM might do better.

      • jonp

        You think you could get reliable feeding in a semi auto with that?

    • Kaban

      Frankly, there is abundance of capable 6/6.5mm’s. Straight .243 Win with heavy 6mm bullet (and there is abundance of 105+gr options) is already OK, provided it fits your action and your mag.

      Now, if Hornady plays the trick again and wins by offering affordable factory ammo…

      • jonp

        I think you will have greater throat life with the 6mm vs the 243 but dont quote me on that.

        • Kaban

          And I won’t argue with that. Judging by case capacity, I’d expect 6mm CM to fall squarely between 6XC and 243 Win.

  • Kaban

    6XC reinvented. Eat that, Tubb!
    /sarc

    (of course, the more the merrier; it is just it is so close to 3000+ fps DTAC-launcher that it is not even funny)

  • Klaus Von Schmitto

    I wish I could buy Varget in 55 gallon barrels.

    • Russ Kell

      For the price, I think I’d have to live in the barrel with the Varget. ๐Ÿ˜‰