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Thread: 116 LWH, (Build Question)

  1. #1
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    116 LWH Action, Can it be used for magnum calibers with a bolt head swap?


    I’m building mountain gun and I’d like to know if I can use a 116 LWH action for a magnum caliber like 300 PRC. If I swap out the bold head to a .532, would everything else hold up to abuse from a heavier caliber? Wondering if the weight reduction cut into the action would be a factor in that. Thanks!
    Last edited by Lane; 02-18-2019 at 11:07 AM. Reason: Clarification of question

  2. #2
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    I'm going to piggy back (Sorry OP!), because I have the exact same question about the 16 LWH action.

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    I would put the PRC on a large shank action. There is not that much weight savings on a LWH action.
    "As long as there's lead in the air....there's still hope.."

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    Sharpshooter, thanks for the reply. What are the benefits of the large shank over the standard/small?

  5. #5
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    Quote Originally Posted by Lane View Post
    Sharpshooter, thanks for the reply. What are the benefits of the large shank over the standard/small?
    Thicker chamber wall wall thickness in the barrel with the large shank.
    "Life' is tough. It's even tougher if you're stupid." ~ John Wayne
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urgent circumstances, desperate circumstances, profanity provides a relief denied even to prayer.” —Mark Twain

  6. #6
    Basic Member Robinhood's Avatar
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    Sorry lane I was thinking 6.5 and so I totally goofed the reply up.

    Quote Originally Posted by Lane View Post
    I’m building mountain gun and I’d like to know if I can use a 116 LWH action for a magnum caliber like 300 PRC. If I swap out the bold head to a .532, would everything else hold up to abuse from a heavier caliber? Wondering if the weight reduction cut into the action would be a factor in that. Thanks!
    Should work fine. Shouldering up the barrel will help a little with the pressure concerns that Jim and Fred mention when they say go large tenon.
    Last edited by Robinhood; 02-19-2019 at 01:42 AM. Reason: Goof up
    The Dunning-Kruger effect is alive and well.

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    I appreciate all the responses. Since the 300 PRC isn’t a short action, would I be better off just starting with a 300 or 338 win mag action? To my knowledge they have the same bolt face as the 300 PRC, just slightly longer OAL

  8. 02-19-2019, 12:09 AM
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    Double-dribble

  9. #8
    Basic Member Robinhood's Avatar
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    I edited my post above. I don't know of the action being different between the 30-06/270 action and the magnum, action. If you had to go with something improved a RUM action has larger threads.
    The Dunning-Kruger effect is alive and well.

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