Could it be?

[bcoving]

Unless my chrono is off the 7mm 150gr LR accubonds have a bc of .600 based on my drops to 600. I would guess the chrono is off but it would be impressive if it holds true.

 

[scoutm]

Unless my chrono is off the 7mm 150gr LR accubonds have a bc of .600 based on my drops to 600. I would guess the chrono is off but it would be impressive if it holds true.

Nosler's website reports a bc of .611 for that bullet. Hard to believe but apparently pretty close given your results.

 

[WildRose]

Unless my chrono is off the 7mm 150gr LR accubonds have a bc of .600 based on my drops to 600. I would guess the chrono is off but it would be impressive if it holds true.

It well could be.