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Old September 9, 2012, 10:10 AM   #13
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Join Date: March 11, 2010
Location: South East Pa.
Posts: 3,364
I can give you another example of oiling ammo. I was working with some Germans at the tank range and checking out a modified MG-42. In the turret is thousands of rounds of ammo linked together. They (Tank crew) pour oil over the belts to keep it feeding right. If you ever heard a .308 MG-42 you know why they oil the ammo. This gun uses a different type lockup.

When it comes to added thrust against the bolt of a locked rifle, I do do believe it increases as the chamber gets more of a polish or has additives to make it smoother.
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