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Just wondering if 55gr bullets will perform well in a 1 in 7 twist barrel or if I should go with something heavier. Opinions would be appreciated.
 

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Just wondering if 55gr bullets will perform well in a 1 in 7 twist barrel or if I should go with something heavier. Opinions would be appreciated.
Yes, 55gr bullets will perform well in a 1/7" twist barrel.

No, you don't 'have' to go with something heavier, unless you rifle shoots better with it.
 

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Just wondering if 55gr bullets will perform well in a 1 in 7 twist barrel or if I should go with something heavier. Opinions would be appreciated.
I have an H&K SL8-1 .223 with a 1:7 twist. 55gr works very nice in it, but I get the best results from a 69gr Sierra Matchking. Both were Federal Premium which is kind of pricey, but I'm not out there blazing away, dumping mags all day. Every gun/barrel prefers a different bullet but mine seems to work best with 69gr.


 
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