My Rem 308 is 24 inch. I was using 165gr super perforance ssts just straight factory and i was getting 2820fps out of it, plenty out to 500m.(not that i shoot that far lol).
Doubt you really need to go longer than that.
My Rem 308 is 24 inch. I was using 165gr super perforance ssts just straight factory and i was getting 2820fps out of it, plenty out to 500m.(not that i shoot that far lol).
Doubt you really need to go longer than that.
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