Product Overview
MTE 25 Creedmoor barrels are match grade, hand cut, CNC profiled to .0005" OD to ID concentricity, and perfectly aligned hand chambered barrels. MTE barrels are manufactured to extreme tolerances for superior performance throughout longer 10-15 round shot sting stages and optimal fit of components. These barrels are the cutting edge of accuracy for you next rifle build. For brass life and wide variety of bullet sections offering we consider an adjustable gas block to be mandatory in this caliber.
Freebore Notes and observations specific to 25 Creedmoor in an AR-10:
1. No handloads 127-138 grains should exceed 2.800" COAL; we have notice extreme trends in accuracy between 2.805-2.825" COAL in ALL freebore options. That is purely based on feeding these projectiles as they are at odd combinations of longer and skinner than the .22, 6mm, and 6.5mm Creedmoor bullet sections. We invented how to feed non standard caliber options in an AR, we would not make this comment in any other way than post testing.
2. At the .150 Freebore SAAMI Spec factory 134 Hornady ammo is jumping .104" depending on the ammo lot and SAAMI spec reamer used as they do not all come out the same. That is obviously not optimal but it does reliably produce average .6-.9moa accuracy, which we are absolutely not happy with. but it is easy to tune to run.
3. As usual we designed our own MTE reamer, like we do in many other cartridges to set this caliber up for success in an AR-10. It is specifically set up to optimize jump, neck alignment post feeding and accuracy forgiveness throughout the heavy for caliber bullet options on the market today all handloaded to 2.790"-2.800" COAL and using H4350. We do not publish MTE reamer design specs as that is to easy for companies to use our R&D to their benefit.... Trust me it is easy to make shoot .3-.6moa groups.
4. With the .180 Freebore option you really need to be trying to push the 138 ATIPs has hard as possible to take advantage of this option. That does put tuning the rifle in somewhat of a narrow window, but its easy to achieve with a JP Silent Captured Spring (JPSC) H3, and 100-110% JPSC spring which is standard in most of there off the shelf options. Slow pooring N555 in a 6" drop tube works best in our experiences.
5. Factory Hornady ammo relies on the long jump to displace powder is such away that it burns off at less initial start peak pressure curves. This means alternative freebore options will have higher peak pressures to initially obturate (make the bullet fill the bore) the projectile. This will narrow how the guns tune regardless of gas system lengths. We put all of these 25 Creedmoor 20"+ barrel options a +3 gas systems, and recommend using a JP Silent Captured Spring (JPSC) H3, and 100-110% JPSC spring which is standard in most of their off the shelf options
6. As more of an easy button recommendation on this caliber we advise customers to run an adjustable gas block, a JP Silent Captured Spring with the H3 Buffer and 100-110% Spring they send in them off the shelf. We still run Low Mass Carriers though.
7. For point of Refrence we are using a .280" bushing with our 25 Cal Mandrel that is .2535", resulting in a .0035" neck tension / interference finish ID.
MTE barrels are match-grade, hand chambered, CNC profiled to within .0005' of the bore's centerline. MTE barrels are manufactured to extreme tolerances for superior performance and optimal fit of components. These barrels are the cutting edge of accuracy for you next rifle build.
These barrels are what many consider to be the most accurate AR barrels on the market for precision AR shooting. These barrels continue to perform at the highet levels in national, regional and local matches including winning the PRS (Precision Rifle Series) Gas Gun Series Mutliple times. If you are looking for a competition barrel or a long-range hunting barrel for the AR-10 platform this is the answer.
Typical accuracy in our AR-10 25 Creedmoors range from .4-.6moa with handloads when utilizing Alpha Brass.
Current averages:
135 Berger AR Hybrid : .4-.5 MOA
134 ELD-M: .5-.6 MOA
131 Sierra SMK: .4-.5moa
138 A-Tip :.4-.6 moa
Key Features & Specifications
- 416R Stainless Steel Barrel – Premium-grade steel for durability, corrosion resistance, and precision machining
- Button Rifled & Hand Lapped – Ensures a smooth bore for enhanced accuracy and extended barrel life
- 1:7 Twist Rate – Optimized for stabilizing heavier, high-BC projectiles for long-range shooting
- Gas Block Options – .875” or .936” for optimal gas system tuning
- Extended Gas System Options – Rifle Length +1”, +2”, or +3” for reduced recoil impulse and smoother cycling depending on the barrel length chosen.
- Headspaced to a JP High-Pressure Bolt – Ensures reliability and safe, consistent performance
- Matched & Trued Extension lugs with optimized feeding feed ramp and breech angles – Maximizes bolt face, bolt lug alignment and accuracy potential, our extensions are made to our spec for optimal feeding, accuracy and reliability.
- Thread Options – 5/8x24 or 3/4x24 for suppressor and muzzle device compatibility
- Finish Options – Stainless steel or Cerakote for added protection and customization
Note: All AR-10 barrels are DPMS Pattern barrels and sized to fit AR-15 Gas Tubes.
