Bottleneck Ammo
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Bottleneck Ammo

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Old 07-12-2007, 04:42 PM   #1
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Default Bottleneck Ammo

Does anyone know why some bullets are smaller at the top and bigger at the bottom?

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Old 07-12-2007, 07:17 PM   #2
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Default Bottle neck ammo

To make room for more gunpowder to make the bullet go faster. If a .223 was not bottlenecked it would be scarcely better than a .22 magnum.

A side benefit is feeding. If you are chambering a .22 caliber bullet into a .36 caliber hole it goes in easier with fewer malfunctions.
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