Re: GAP 10 drivers.... How do they handle up to 1k
I used 155gr Scenars in a GAP .308 AR built with a 22" Obermeyer barrel. That is a .5" gun pushing the 155's at 2820fps.
After chasing 1k with .308 for so many years, I finally accepted the limitations of that cartridge and went .260 Rem, also by GAP. My .260 GAP AR will shoot within MOA at 1000yds without changing my wind hold, even if the wind changes within 3-7mph.
I recently shot it at 1k off my truck bed, rapid-fire, off the bipod, with a mirage-boiling target using 10x on my Vortex Viper PST, and got a 9.25" group with the 130gr Berger VLD's on top of 43.3gr of H4350. I have a 22" Bartlein pipe in it. At 100yds, it shoots 5-round .4"-.6" groups with 139gr Scenars, 130gr VLD's, 140gr AMAX's. The worst it has shot is .75-.9 MOA outside of accuracy nodes.