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Old January 13, 2012, 10:38 AM   #14
Junior member
Join Date: June 30, 2010
Location: Alamo City
Posts: 356
Don't forget to consider barrel length and twist rate. I chose an upper with a 16" barrel and 1:8 twist. I chose portability over the extra 100-200 extra fps velocity I'd get with a 20" barrel. I chose 1:8 twist because I'll be shooting some 75gr bullets but probably never any heavier (longer).
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