09-19-2021, 07:39 PM
I run a 140 RDF over 28 grains AA2520 out of my 18" Sanders match barrel with R5. I get 2300 fps(will 2299 from my maga speed 3) no pressure signs, ejector swipes or flat primers. I use a adjustable gas block with silence to harvester. Muzzle energy 1644 the good part is I am supersonic @ 1000 with 457 energy.

