If its a mil/moa scope like leupold was fond of for so many years its probably 10x. Every SFP I've had over 10x has been 10x. Surprised leupold didn't mark the mag on the ring. I've had much cheaper optics that all had it in red
The Nightforce NXS SFP’s are set at the maximum. I had an IOR 3-18x SFP and it was set at 10x.