Hi All, Thank you for taking the time to read my question. This is to all of you experienced long-range shooting gurus out there. How much importance do you put on the optical center? On my rifle and scope set up, (338 Lapua and a Vortex Viper PST) if I preload my MOA to 30 using an aftermarket base, at 100 yards zero I would only have about 5MOA to spare, my scopes optical center should be around a thousand yards. Then to take it up to its maximum I would be out to about 1600 yards. The same scenario but with the preloaded 20 MOA should give me about 15 MOA to spare at 100 yards, the optical center is now closer to 800 yards and my maximum zero is out to about 1400 yards. In your opinion would you set up your scope for maximum distance (Preload 30MOA)? Or Would you set up your scope closer to optical center where you're going to use it 99% of the time and then rely and hold over for those once in a while shoots (Preload 20MOA)? Thank You!