Usually .311 but Ruger barrels for the M43 round are .308 which is why many US made dies have both a .311 and a .308 neck expander ball , Nosler reccomend their new pill for the Whisper etc so it should work . Norma used to make a 130gr 308 round (and projectiles) ,which was dynamite on Sika and Fallow and worked very well on Reds
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