I cant stress enough to do your own load development, and trust more what your brass says than an online tool. Look for obvious pressure signs. If they exist, then don't use that higher load at all.
Assuming that you are using Lapua brass, I'd bet that you can get many loadings on it, even if you are around 59K. Used brass is fine, just check it every cycle. If the primers go in or come out with no resistance..it's time to scrap that piece of brass. I'm also assuming a quality chamber in the barrel and annealing (case head separation and neck splitting).
Guys have been hot rodding (loading up to very high pressures) the 6.5x47 for a long time. Much of that has to do with the brass quality.
That being said, I personally stick with the lower node. I am the minority here however. Out to just 600 yards you aren't giving much up if you run it 30 m/s slower...that's only about 19cm difference in drop, and less than 4cm difference in wind with the 139gr Scenar.
Speed will matter more as you go out further.
I run 123gr bullets at about 860m/s, and 130s about 830m/s.
You'll have to forgive me if I don't try to use the metric system anymore this week.
thanks for a sweet shooting rig Eddie!
