F-TR is Midrange/Long Range Prone matches shot with either the .223 Remington or .308 Winchester cartridges using rifles equipped with a bipod and a sandbag in the rear. Originally we used a chamber with .068" freebore, that was pushed out to .170" freebore to accommodate using 185gr/200gr Berger bullets and a cartridges OAL of 3.09"
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