243 AI vs 6mm on 6.5x55 case?

Discussion in 'Varmint Hunting' started by 308, Apr 25, 2010.

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  1. 308

    308 Well-Known Member

    Dec 13, 2001
    I have a friend with a couple of Rem 40x's with 27 inch barrels chambered in 6mm Remington, I love the performance he gets with these rifles, 70 Nbt's @ 3700 plus.

    This is the best crow busting combo I've ever seen and I've tryed a bunch of diff combos.

    I don't like the fact that no one makes match quality brass in 6mm rem.

    If I were to build a rifle to duplicate this perormance, (70 grain Nosler ballistic tips at 3700 or a little more)

    Which rifle would be the best choice in your opinion, a 243 ackley improved with a 27 or 28 inch barrel or a 6.5x55 necked to 6mm, I think this is the 6mm vais.

    You can start with Lapua brass in either version, what is your opinions?

    Thanks, JS aka 308
  2. Sam In Va

    Sam In Va Well-Known Member

    Dec 14, 2002
    I shoot a Remmy 788 in a BR stock with a 28.5" 10 twist tube that shoots the 70 grain Sierra Blitzkings @ ~ 3850. It turns crows into gray smoke @300 yards.. I have killed groundhogs @ 515 & 880 yards with this rig... can't say enough good about it. I wuld build another one in a heartbeat!

    I had a standard 6mm Rem & it shot ok, but not as flat as the 243AI... now you could go with a 6mmAI , but still have a quality brass issue. Good luck on your choice. Sam
  3. NRV

    NRV Member

    Mar 20, 2009
    You may want to try a 6mm Rem (or AI) using Norma 7x57 mauser brass to start with. If I recall, wasn't the 6mm Rem based on the 7mm mauser anyway? I'm a big 243 Win fan, but the longer neck and slightly larger capacity off the Rem would be very nice. If you don't mind fireforming, I'd go with a 6mm Rem AI.

    Check out this one:
    6mm Remington Ackley Varminter
  4. 436

    436 Well-Known Member

    Mar 22, 2009
    6x55mm Swede would be something like the 6x55mm Vais would be a great pick... Very ballistically similar to the 6x284 Win I thought the 6mm/.244 cases was a little stronger {web} than the original 7x75mm Mauser case. Fred Huntington thought the .243 Rockchucker was about as good as it got in the 6mm varmint cartridges, base on a 6mm with a 32 degree shoulder. Me I think I'd try the 6mm Vais.