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stupid question of the day

Discussion in 'Handloading and Reloading' started by mm1ut1, May 24, 2010.

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  1. mm1ut1

    mm1ut1 Member

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    For a rifle with a groove diameter of .310" what size fmj bullet diameter should I use ? :eek:
     
  2. Walkalong

    Walkalong Moderator

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    .308 to .311 will work just fine by most accounts, but I will wait for the experts in that area to chime in.

    Krochus has done a lot of work in that area.
     
  3. Lee Roder

    Lee Roder Member

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    WAG here

    Wouldn't it depend on the bullet profile? Would a boat tail obturate to the same extent as a flat base?

    :confused:
     
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