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Sierra Bullets Publishes 6mm Creedmoor Reloading Data

The following excerpt is from an article that originally appeared on The Firearm Blog Ammunition

The 6.5mm Creedmoor finally has some more published data behind it for prospective reloaders of the caliber. Sierra Bullets, the company known for 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.

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