I took my chrony out the other day to let my buddy shoot his 6.5-06 AI over it to check his velocities (averaged just under 3300). Afterward we zeroed the rifle at 200 yds and also shot it at 600 yds. I dont have my notes in front of me right now and don't remember the adjustment off the top of my head. Once we got it on at 600 yards, I went back to the house and entered the information in the Gseven program and came up with a G1 b.c. of .606! This seems extremely high for a bullet of this caliber and weight. I've read in several forums that the claimed b.c. of the 6.5 hornady sst and interbond were way underrated but to this extent? I was just curious what kind of numbers some of you guys with experience with these bullets were coming up with. I keep thinking I had to have entered something wrong in the program cuz .606 seems almost too good to be true...
129 SST BC is .483 so i would be doubtful the interbond is much better if any.
Remington 700 7mm SAUM Magnum Research Barrel
Savage Target Action 6.5x47 Lapua
Savage Predator Hunter Max1 6.5-284 Norma
Savage Bear Hunter 338 Win Mag
"Gotta Kill It Before You Can Grill It"
I had to have entered something wrong the first time. I went through all my data and ran the numbers again last night and came up with a G1 value of .505. Seems much more realistic to me. That's not too shabby for a 129 gr slug. I may give em a try in my .264wm when I get my scope. Looking at the numbers, it should outrun the 140 gr Accubond with a claimed B.C. of .509 (which has been stated by some to be overinflated).