I’m seeking some advice from any of the long range Benchrest shooters that’s shooting a 6.5x47 and 140 hybrids.
My main question what is the accuracy node I need to look for?
I shot my new barrel today with 140’s at 1k and what shot great this morning didn’t do so hot this afternoon late. I recorded my velocities this evening where as I didn’t this morning.
I was running from 2804-2836 FPS shooting 40.0-40.4 grains H 4350
my barrel has now exactly 128 rounds down it so I’m pretty sure it sped up as this am I shot 3 across the chronograph to get a velocity so I knew how much to go up and 40.0 was 2770 FPS so it increased 34 FPS but also temps were 15* warmer also but I doubt enough to take up the entire 34 FPS.
groups were right about 4.5” on a avg this evening for 4 shots
My main question what is the accuracy node I need to look for?
I shot my new barrel today with 140’s at 1k and what shot great this morning didn’t do so hot this afternoon late. I recorded my velocities this evening where as I didn’t this morning.
I was running from 2804-2836 FPS shooting 40.0-40.4 grains H 4350
my barrel has now exactly 128 rounds down it so I’m pretty sure it sped up as this am I shot 3 across the chronograph to get a velocity so I knew how much to go up and 40.0 was 2770 FPS so it increased 34 FPS but also temps were 15* warmer also but I doubt enough to take up the entire 34 FPS.
groups were right about 4.5” on a avg this evening for 4 shots