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N565 or 570 for 300WM

Bigwheels

Gunny Sergeant
Full Member
Minuteman
  • Jun 16, 2007
    1,830
    298
    58
    Anacortes WA
    Curious about these powders. I've heard that they are very clean, and have little to no lot variation so I was thinking about trying it.
    Rifle is a 300WM, 28" 1-9.5 twist and I'll be running the Hornady 225 ELD-m. According to my software my current load with H-1000 is pushing these @ 2870 fps.
    Does the brain trust believe that I might gain anything from making the switch and if so which one to try 1st?
    Thanks.
     
    I've played with N570 a bit in my 300WM with 215 bergers. I had two issues with it. To gain any negligible speed over H1000, it was a very compressed load. This caused me to run into issues with keeping a consistent OAL length. I probably would have had to run more neck tension to compensate. The reamer that was used for my rifle is geared toward seating the 215 bergers long so I have as much case capacity as possible. Problem #2 was that it meter's like shit out of my charge master. I've also heard mixed reviews about N570 causing increased throat erosion, but there doesn't seem to be any hard facts proving it does.