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Long bullet jump and throat erosion...

Discussion in 'Handloading and Reloading' started by Eyesac, Mar 6, 2010.

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  1. Eyesac

    Eyesac Member

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    I read once that long bullet jump can increase throat erosion, is this just a rumor? Or has anyone had this experience? I realize that there’s probably no real data out there, but has anyone loaded rounds with a big jump (like .2 or more) and had a throat erode extra fast or prematurely?
     
  2. rcmodel

    rcmodel Member in memoriam

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    Many factory rifles made more recently probably have more then .2 jump when shooting factory ammo in them. It's a lawyer thing to reduce pressure.

    Weatherby started the very long free-bore thing about 1948 to get extra velocity with less pressure.

    I don't think Weatherby rifle's burn out barrels any faster then any other caliber that burns that much powder every shot.

    rc
     
  3. 243winxb

    243winxb Member

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    If the base of the bullet leaves the case mouth before the bullet seals the bore, you get more throat erosion or gas cutting.
     
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