Help with caliber(s) 30 cal

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by uafgrad, Apr 5, 2003.

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  1. uafgrad

    uafgrad Member

    Apr 1, 2003
    I just got a Armalite AR10A4 (20"brl) and am interested in upgrading the upper. I spoke with a company who told me that they can make an upper in any caliber that is spawned off of the .308. Any help in what calibes this would be would be appericated.
  2. Guest

    Guest Guest

    I have chambered AR-10s in 300 WSM, 6.5 WSM, 6.5 SAM, .308 WIN., 308 win. IMP., .243 IMP., 22-250 IMP., 6 mm. IMP.,
    and 6 BR.

    Basically, anything that will function less than 2.830" OAL. and will use a boltface between .480" and .540" will probably be workable.
  3. texas

    texas Well-Known Member

    Sep 26, 2001
    S1 what's with the 308 win imp? Can't find any info on it.
  4. Guest

    Guest Guest

    My reamer has a 40 degree shoulder, and about .012" taper with a .334" neck.