02-09-2018, 10:34 PM
Just got back from shooting an OCW spread with my new rifle and I believe I've found an AR-Comp load for it which will deliver good accuracy without over pressure signs (primer flattening comparable to Hornady Black factory ammo).
The hBN bullet coating appears to have worked in that I didn't have a single flier in a 50rd OCW spread, and the original accuracy node at 26.8gr was found again at the expected 2% powder increase after coating the bullets.
AR-Comp 27.2gr
HDY ELD-M 123gr (hBN coated)
CCI #450
COL 2.260" (ogive 1.688")
2448 fps avg, 11 ES, 5.4 SD
Group size .81" avg
The hBN bullet coating appears to have worked in that I didn't have a single flier in a 50rd OCW spread, and the original accuracy node at 26.8gr was found again at the expected 2% powder increase after coating the bullets.
AR-Comp 27.2gr
HDY ELD-M 123gr (hBN coated)
CCI #450
COL 2.260" (ogive 1.688")
2448 fps avg, 11 ES, 5.4 SD
Group size .81" avg

