AccuChannel Groove Technology of Federal Edge TLR Ammunition

Federal Premium has released a video explaining the AccuChannel Groove technology seen on the bullets of their Edge TLR ammunition. Based on the conducted tests, they’ve found out that if placed in a specific location, a single groove on the projectile will have the advantages of multiple grooves. They also have a different groove geometry which according to Federal Premium reduces the pressure on the groove as well as decreases the drag of the bullet thus improving its performance.

As shown in the above image the groove has a conventional 90° front wall. However, the rear wall is angled to allow the air that enters the groove to exit it in a more streamline pattern compared to a normal groove. Here is the Federal Premium’s video telling about the AccuChannel groove:

How important is that accuracy improvement for you? It is hard to tell. It probably depends on the firearm you use, your skills, the applications and distances you use it for etc. It would be great to see some actual external ballistics data (drop and drift by range, trajectory graphs etc.) of bullets with a conventional groove and AccuChannel groove compared. That would allow anyone to decide if the amount of gained advantage is important for his particular task or not.

Hrachya H

Being a lifelong firearms enthusiast, Hrachya always enjoys studying design, technology and history of guns and ammunition. His knowledge of Russian allows him to translate and make Russian/Soviet/Combloc small arms related information available for the English speaking audience.
Should you need to contact him, feel free to shoot him a message at


  • BattleshipGrey

    So that’s why it costs $2 a round.

    • uncle bobedy

      You got to pay to get in the groove.

    • Lee Attiny

      It costs a lot of money to put that groove in a mold and cast bizzilliones of bullets from it. Atleast twice as much as a mold without the groove.

      • Dr. Longfellow Buchenrad

        It costs a lot of money to pay the engineers to precisely design the perfect groove.

        But Im sure you could get bullets that are just as good by mounting plain old FMJs in a lathe and filing your own groove in them.

      • Christian Hedegaard-Schou

        Modern jacketed bullets are swaged, not cast. The grooves are formed in another tool that will impress it into the jacket.

        It’s not as simple as creating a mold and casting lead.

  • Dougscamo

    It would have been nice to see some testing instead of the commercial….
    Theoretically, it makes sense….but the bullets I shoot have no groove(s) and they are what the long range crowd consider the ultimate…we need RocketScientist’s take on this….since he is, well a Rocket Scientist as I understand…

    • Scott Couch

      Clay Martin over on Gunsamerica did a video on the 308 caliber.

      • Dougscamo

        With this bullet?

  • X

    I call it bs, also doesn’t make much sense from an aerodynamic standpoint.

    • X

      You can DIRECTLY see the drag increase in the simulation. Its just a slightly better geometry for a groove, and not the slightest aerodynamic increasing to a flat surface.

    • Some Rabbit

      In a world awash in ammo, you gotta have a marketing gimmick. Federal has their ‘magic groove’ others will soon follow…the groove wars, begun they have.

      • Russ Kell

        Dimpled bullets. Like golf balls. 😉

  • Cyborg Fred
  • Rusty S.

    I’d be interested to find out if there are advantages at transonic velocities.

  • Scott Couch

    Can’t wait to get my hands on some of these to load up for the 30-06.

  • Nate

    Fancy, a cusp style vortex generator for fine tuning of the boundry layer.