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6.5 PRC and Berger 156's velocities?

Seems like a lot of folks are getting way better velocities than Berger posts for the various charges. Even though Berger data is based on a 26 in barrel and most of us shoot 24's.
Berger uses quickload data on conservative settings. Also, in general people load up to initial pressure and back off some. With good brass on a well built rifle, clear pressure signs often don't appear until over (sometimes significantly) standard saami pressure limitations.
 
I'm running 153gr A-tips at a comfortable 2,775 with 56 gr H1000. There is plenty to spare but this load is so accurate I'm good with it as far as I've shot it, which is 1,000 yds. Hold impressive accuracy out to that range.
 
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