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Rifles, Bullets, Barrels & Ballistics Applied Ballistics



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Unread 09-08-2004, 10:06 PM
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Skeeter, to give you an idea on how much ejector mark is acceptible(shiny spot on case head), I recently tested a box of Rem 7mm RUM and 300 RUM factory ammo.

Upon firing in Rem factory 700 rifles, each case for both calibers showed just a faint extractor mark. You could see it but it was not obvious and shiny.

This is what you should be going for.


If your cases are tight when you chamber them and if you have a slight burr on the lip around the plunger ejector in the bolt face, this will give a false rub on the case as well when you unload the case from the chamber.

To test pressure you should really be using virgin or once fired brass. Old brass will not tell you accurately what is going on.

Good Shooting!!

Kirby Allen(50)
Kirby Allen(50)

Allen Precision Shooting
Home of the Allen Magnum, Allen Xpress and Allen Tactical Wildcats and the Painkiller Muzzle brakes.

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