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Proof Research built its name on solving the age old tradeoff between barrel weight and barrel stiffness, and this 103395 blank is a good example of how they did it. It starts life as a full profile, match grade 416R stainless steel blank, double stress relieved and cut on the same equipment used for their premium steel barrels, then turned down and wrapped in aerospace grade carbon fiber. The result is an 18 inch Sendero contour barrel in .224 caliber with a 1:8 twist, weighing in at 2 pounds 10 ounces, a fraction of what a comparable steel Sendero contour would weigh.
This .224 chambering covers a wide range of popular cartridges including .223 Remington, .22-250 Remington, .220 Swift, and .224 Valkyrie, so gunsmiths have plenty of room to chamber it for whatever round you're building around. The 1:8 twist is a solid middle ground rate that stabilizes heavier for caliber bullets well past 75 grains while still handling lighter varmint loads without over-stabilizing them, which makes this a flexible option whether you're chasing coyotes or punching paper at distance.
Carbon fiber isn't just there to shave ounces. It moves heat away from the bore faster than bare steel, which means less point of impact shift during a long string of fire and a barrel that holds its accuracy through a hot afternoon on the bench or in the field. The wrap also adds stiffness compared to a steel barrel of the same contour, so you get less harmonic whip when the bullet leaves the muzzle.
Keep in mind this ships as an unchambered blank with a 2.50 inch breech and 1.20 inch shank diameter, so it needs to go to a competent gunsmith for chambering, threading, and fitting to your action. That's standard practice for a barrel at this level and gives you full control over final chamber specs, thread pattern, and overall length for your specific build.
No, this is sold as a raw barrel blank, so it comes unchambered and unthreaded. You'll need a gunsmith to chamber it for your specific cartridge and cut threads for your action and muzzle device of choice.
The .224 bore diameter on this blank works for a range of popular rounds including .223 Remington, .22-250 Remington, .220 Swift, and .224 Valkyrie. Your gunsmith will cut the chamber to match whichever cartridge you're building for.
A 1:8 twist is a good all around choice for .224 caliber bullets in the 75 to 90 grain range, which covers most long range and hunting loads. It will also handle lighter varmint bullets without issue, so it's a flexible pick if you're not locked into one bullet weight.
Proof Research's carbon fiber wrapped barrels typically run significantly lighter than a steel barrel of the same contour, and this Sendero profile comes in at 2 pounds 10 ounces. That weight savings matters most on hunting rifles or any build where you're trying to keep total rifle weight down without sacrificing barrel stiffness.
| UPC | 843068103395 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 103395 |
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