I'm a little late to this post but I finally got to shoot my rifle today!
FN PBR receiver, Bart Marksmen 26" fluted left twist , gain twist 1n9 to 1n8.25 twist with Claytons muzzle brake, BEST bead blasting job I've ever seen anywhere!!!
McMillan A3G stock bottom metal/floor plate modified by WTO for SAW II chamber 3+"s coal possible feeds flawlessly!
I did a Satterlee load development test with Berger 175 Elites and three powders.
H4350 @45.6/45.8/46.0 netted me a 6 fps spread @2700 fps/2697fps/2709fps , not sure if this is the low node or not and will go higher depending on what the case and bolt lift/ primers tell me!
I started too low with RL16 and never found a high node but the low yielded
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I plan on re-shooting this to gain more data!
StaBall 6.5 will have to be done over as the low node was 45.7g@2640 fps, 45.9g@2640 fps and jumped to 2686 fps @46.1g
the next four rounds went as follows, 46.3/2697 fps,46.5/2711 fps, 46.7/2716 fps, and last load 46.9/2724 fps
All these rounds exhibited no heavy bolt lift and only minor primer flattening.
For the time being this is only a hunting rifle , until I can find a chassis system that will allow ARC magazines and works with a M-70/FNH receiver, HELP!!!
I will post future results when possible!
Happy Thanksgiving Everyone!