I've got almost 500 rounds through an x-caliber 308 win barrel and it gives me 1/2 moa at short range and opens up to 3/4 to 1 moa at medium to long range.. I'm still working on tightening up my reloading consistency so I still don't think I've seen the true potential of this barrel. My shooting skills and consistency are what I would consider to be average.. I have looked at my barrel with a bore scope but I didn't even think to count the groves...
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