After always shooting a standard 3-10x duplex reticle scope and limiting myself to 350 yard shots I got a new rifle, Sauer 100 in 7mm Rem Mag and Nightforce NXS 5.5-22x56 scope. I messed with some handloads but wasn't getting the accuracy i was hoping for so I tried some 150 gr Barnes Vortex TTSX factory ammo and those were shooting great. To start, I used the data on the box for MV and the BC on the Barnes website to create a DOPE chart. The info must have been right because this was my first time ever dialing for distance and I was hitting steel every shot out to 510 yards. I'm sure there's a lot more work to do to really dial things in but for a first timer I was pretty happy and it was a lot of fun.