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The Creedmoor Family Tree is Growing into a Cartridge Dynasty

Talyn

Talyn

Emissary
Founding Member
The first Creedmoor was developed in the early 2000s by a group of folks seeking to design a perfect cartridge. Their goal was a flat-shooting, low-recoil cartridge with high ballistic coefficient bullets that would feed well from a magazine.

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They based the cartridge on the .30 Thompson Center, another cartridge looking for fame, but not the famous .308 Winchester. The case was shouldered at 30 degrees and necked down to .264, and thus, the 6.5 Creedmoor was born.


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Since then the Creedmoor family of cartridges, including the .22, 6mm, and .257 Creedmoor, has grown significantly in popularity and adoption.

The .22 Creedmoor, for example, is necked down from the .257 to stabilize higher ballistic coefficient bullets, making it suitable for various shooting applications.

The .25 Creedmoor, on the other hand, has been re-ignited with new bullet designs that enhance its performance, offering flatter trajectories and more energy on target. The .257 Creedmoor, while still a wildcat cartridge, is gaining traction as a reliable and accurate option for hunters and shooters alike.

The Creedmoor family's evolution reflects the ongoing innovation and adaptability of cartridge design, ensuring that these cartridges remain relevant and effective in the shooting community.

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The creed line are a good design as I've owned the 26cal version for only 10+ years. X-cal had their 20% off (possibly still going on) as I was goito take advantage of ut and order 2 22creed's, 1 6 and 1 25creed. The 6 and 25 as twist decisions are easy, but the 22creed depending on bullet weight requirements for stabilization limits barrel length. If using mono's (all copper) the twist being to fast isn't as critical as is fo cup-n-core (lead/copper) bullets. On average if the bullet rpm' exceed 320k it could come apart in flight. That depends on jacket thickness. With case capacity in h2o being around 6.5grs more than a 22-250 it can shorten barrel life even more than the 22creed. For average shooters it could last a lifetime? Going with a 8 twist a 24" barrel using 62-75gr can work , but for 85-90gr a 20" is the limit. If Hornady decides to expand to the 27 and 28cals there wouldn't be any benefits.
 
TEXASforLIFE said:
The creed line are a good design as I've owned the 26cal version for only 10+ years. X-cal had their 20% off (possibly still going on) as I was goito take advantage of ut and order 2 22creed's, 1 6 and 1 25creed. The 6 and 25 as twist decisions are easy, but the 22creed depending on bullet weight requirements for stabilization limits barrel length. If using mono's (all copper) the twist being to fast isn't as critical as is fo cup-n-core (lead/copper) bullets. On average if the bullet rpm' exceed 320k it could come apart in flight. That depends on jacket thickness. With case capacity in h2o being around 6.5grs more than a 22-250 it can shorten barrel life even more than the 22creed. For average shooters it could last a lifetime? Going with a 8 twist a 24" barrel using 62-75gr can work , but for 85-90gr a 20" is the limit. If Hornady decides to expand to the 27 and 28cals there wouldn't be any benefits.
Click to expand...
If I got a 22 CM I'd only run heavies in it, and I don't mind a 26" barrel length since that's the standard length for me in most of my LR bolt guns.
 
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