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  1. #1
    Contributing Member skip_c's Avatar
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    68 Gram

    Can you shoot a 68 Gram bullet in a 1 in 7 barrel ??
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    Really Senior Member Daan Kemp's Avatar
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    You mean grains? 68 grams=1 049 grains

    It depends on the calibre and what you want to achieve. What do you have in mind?

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    Advisory Panel tiriaq's Avatar
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    You can shoot a 68gr bullet in a 1:7 .223.

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    Advisory Panel Brian Dick's Avatar
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    Yes, competition shooters use 68, 77 and 80 grain projectiles. There is also a military load with the 77 grain SMK which is as long as it gets for feeding from a magazine. The 80 grain SMK is for single loading in slow fire prone at 600 yards and is too long to feed from the magazine.

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    Contributing Member skip_c's Avatar
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    68 Grains

    Thanks to everyone for your help.
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  8. #6
    Advisory Panel tiriaq's Avatar
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    1:7 is a faster twist than needed for most any .224 bullets used in an AR. It was adopted in order to stabilize the very long tracer bullet.


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