Yes. I used a Sightron SII 3-9 last year. I hunted eastern MT, which is open country. The scope was mounted on a Tikka T3 Lite in 270 WSM. I only paid around 200 for it at SWH, which is amazing considering how good the Sightron glass is. The scope performed perfectly. The glass is sharp, adjustments worked properly and it held zero. I filled several tags with that set up, the longest shot being around 320 yards. I replaced it on the 270 with a Kahles (was looking for more magnification), and switched the Sightron to a different rifle. In my experience, the Sightron SII is a good scope, and it's my understanding that the SII Big Sky is a step up.