90gr .224

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by Cheyenne19, May 13, 2008.

  1. Cheyenne19

    Cheyenne19 Well-Known Member

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    Feb 9, 2007
    Anybody shooting the 90's? What speeds are you running, and what twist?
     
  2. milanuk

    milanuk Well-Known Member

    Messages:
    806
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    Jan 21, 2002
    I've ran a few (two boxes of 50, and part of a box of 500) 90gr SMKs thru a .223 Rem - standard A2 NRA Service Rifle legal gun with a Wylde chamber in a 20" 1-7" twist stainless Wilson barrel. IIRC, I was running Varget behind them... rather stout load of 23.5-24.0gr (don't have the load notes available), netted me ~2580-2600fps. Basically... out of a .223 at least, its tough to get them going fast enough to out-fly the 80gr bullets by a meaningful amount.

    IIRC, Sierra recommended a 1-6.5" twist, but the consensus was that a 'true' 1-7" would work - mine seemed to.

    Still have most of a box of 500 sitting on the shelf that I need to shoot up. Probably won't re-order those; rather I'll stick w/ 75-80gr bullets.

    HTH,

    Monte