Re: I want to build a Whisper gun need a few ideas
With the slower speeds a 1-8 is good insurance. You can not hardly over spin the lighter bullets at the velocity the Whisper case drives them.
I kind of misunderstood your question. Of the whisper line the 338 is my personel favorite. Two loads are of interest, the 300 gr SMK of course at subsonic levels and the 180 gr ballistic tip load. Between the two it makes the rifle do alot.