7.62x45mm...Might be a good,new AR-15 caliber? - Page 2
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Thread: 7.62x45mm...Might be a good,new AR-15 caliber?



  1. #11
    Gunfighter
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    Isn't that what the AR-14 Biden is chambered for?
    rob42049, gunscrewguy and Maineiac like this.
    Wild Turkey

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  2. #12
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    Back in 80s a guy I knew got a killer deal on a case of “AK” ammo. He couldn’t get it to work in his AK and brought gun and ammo for me to check out. This ammo wasn’t 7.62 x 39mm. This was steel cased and when I measured it to research what it was it turned out to be a 7.62 x 45mm that Yugoslavia chambered for their rifle in early 50s. Just to stay separate from Soviet Bloc. Still have 50rds of that ammo.
    gunscrewguy likes this.
    Never trust a man who rents pigs : Gus, Lonesome Dove

  3. #13
    jdh
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    7.62X45 COL is 2.365. Ar mags are limited to 2.275.
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  5. #14
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    The 6.5 grendel is a potent AR15 round. Mine has a 20 inch barrel. i have yet to test it. Too many irons in the fire.

    External ballistics[edit]


    Muzzle Velocity Change with Bullet Weight

    Bullet velocity: 24 inch (609.6 mm) barrel
    Bullet mass Muzzle velocity 1,000 meter velocity
    gr g ft/s m/s ft/s m/s
    Lapua Scenar 108 7.0 2,700 820 1,166 355
    Lapua Scenar 123 8.0 2,620 800 1,222 372
    Lapua FMJBT 144 9.3 2,450 750 1,213 370




    NRA Endowment Member, Texas State Rifle Association Life Member, Firearms Accumulator, Native Texan, Team 99 #29

  6. #15
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    image.jpegI don't have any magazines to measure, I only own classic type firearms. I am thinking about a AR in m16a2 version for social reasons. The only 223 I own is a #3 Ruger.
    Pic , from Left to right. 7.62x45 5.56nato ( 55gr GI ) 7.62x39.
    I don't know if this is same 7.62x45 discussed. If they wanted to use it in AR they could tweek it easily for OAL cartridge. I'm for 30cal cartridge. I have no experience with new GI 5.56 ammo. I know from personal experience that the 5.56 was poor performer in door to door when most buildings were block construction. The 7.62 NATO would chew holes in it fast. That would have been 155gr/ 2850 fps.
    I'm betting they can come up with 30cal cartridge very close to bullet weight and velocity.
    Last edited by Drm50; 03-18-2020 at 12:39 PM.
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