224 Valkyrie: Dual Rifle Build Details and Overview

This is going to be perhaps the most in-depth project I’ve taken on here on Ultimate Reloader- building two rifles, working up load data, measuring ballistics, and a bunch of related field work (hunting, and who knows what else). I’m excited to get started, and to share these experiences with you. What is it I’m talking about? It’s my “224 Valkyrie Journey”! In this article, I’ll outline my first projects- a Remington 700 rifle build *and* an AR-15 build (upper). Let’s get into the details!

Rifle Build Goals and Parameters

The goal for these rifle builds is to use both a bolt gun (Remington 700 custom build) and a semi-automatic (AR-15) to evaluate the capabilities of the 224 Valkyrie rifle cartridge with and without semi-automatic “variables” at play. While 224 Valkyrie was developed specifically for the MSR/AR-15 rifle platform- I think this cartridge could be a great bolt gun application as well. Only hands-on experience will “tell the story”.

Here are some common goals and parameters that apply to both rifle builds:

  • Velocity: Harness the potential of 224 Valkyrie with a 24″ barrel
  • Precision: Use and chamber match-grade barrels in order to attain optimal precision
  • Apples-to-Apples: As much as possible, keep parameters such as barrel steel, twist rate, and barrel length the same for both rifles

I’ll also strive to focus on the actual field applications for this kind of rifle such as long-range varmint hunting, PRS applications (why not), and general long-range target shooting. Sounds like a lot of fun to me!

AR-15 Build

For the AR-15 Build, I plan to “borrow” the lower from my Sharps Rifle which normally wears an upper chambered in 25-45 Sharps. So I’ll focus on the upper itself for this rifle build. Here’s a picture showing the components I’ll use for this build:

Above we have:

  1. Existing AR-15 Lower
  2. Aero Precision Stripped Upper Receiver
  3. Benchmark Barrels 24″ AR-15 barrel blank (HBAR) 1:7 Twist – pre-profiled
  4. ProMag 27-round 6.8 AR-15 Magazine
  5. Kinetic Concealment Ambidextrous charging handle
  6. Del-Ton Upper Receiver Parts Kit
  7. Del-Ton AR-15 Barrel Extension
  8. Del-Ton Rifle-Length AR-15 Gas Tube
  9. Trinity Force Micro Gas Block
  10. Precision Reflex 6.8 AR-15 bolt (will use separate bolt carrier)
  11. Trinity Force MX15 Free-Float Handguard

This will be my first AR-15 barrel chambering, which I’m really looking forward to! Lots more details coming up.

Remington 700 Build

I’ve shot plenty of Remington 700 rifles, but have never built one. Now is the time! Here’s what I’ll be using for this build:

Above we have:

  1. Kinetic Research (KRG) Bravo Remington 700 Chassis
  2. Benchmark Barrels 224 barrel blank, 1:7 twist, 24″ finished length  (Sendero)
  3. New Remington 700 Action with bolt modified by Benchmark for 6.8/Valkyrie (with Sako-style extractor)
  4. Badger Ordnance .312″ oversize Remington 700 Recoil Lug
  5. Benchmark Tactical Brake Mini (threaded for 1/2″ 28)
  6. TriggerTech Special 1lb – 3.5lb trigger for Remington 700

*I’m still working out the magazine situation!

I wanted to go with a nice chassis and trigger for this build, because I plan to add bolts and barrels to this rifle so that I can use it for multiple short-action cartridges. Should come in handy for a lot of projects in the coming years! Can’t wait to run some full Trigger Scans of this rifle to see how the trigger performs at various peak pull weights. Stay tuned!

What’s Next

I *believe* I have everything needed to carry out both rifle builds. So in the coming weeks I’ll be publishing those stories. Then it’s on to load development, ballistics evaluation, and more. Can’t wait!

Have you built a 224 Valkyrie rifle? I’d love to hear your experiences, please leave a comment!



4 thoughts on “224 Valkyrie: Dual Rifle Build Details and Overview”

  1. I’m really interested in the barrel work. I’ve only dealt with ready to install barrels and not a blank.

  2. If you want to get our experienced perspective come join us over on Facebook.. 224 Valkyrie Bolt Action Rifle.. we have some of the first guys that built them in the group and many of the answers so far.. https://www.facebook.com/groups/1607800592668660/ we also run the 224 Valkrie Reloading group that has basically figured out and shared the best approaches to reloading for the Valk., https://www.facebook.com/groups/398943407218038/

    Enjoy its a fun round to shoot!

  3. I built a AR into a 224 Valkyrie. re-barreled a piston driven upper from Adams Arm, that was a 5.56. Had my gunsmith put on a 20 inch Shilen SS 1/7 twist. Also did the stock and recoil spring housing with a unit to comply with California laws, so it is legal and done before I would have had to register the original as a assault weapon. Also changed out the Bullet button, which Ca made us put on a few years back, and then decided it was illegal and went back to the original mag release, which they now approve, with this stock set up. (no hand grip, etc.)

    I also had the same gunsmith chamber a Xcaliber 18 inch SS 1/7 twist I had in 221 fireball, to a 224 Valkyrie, so now I can switch it onto one of my Savage actions, for a bolt rifle in that caliber. Both rifles shoot very well and are accurate. Will use them on coyote, rock chucks and rabbit outings.

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