Though built like tanks, the USO scopes exact a penalty with their size and weight. This 3.8-22x44mm SN-3 looks big even on this 50-inch-long .338 Lapua rifle.

With the USO, you can get a zero-stop many-click multi-turn elevation knob with 0.1-mil clicks and a mil-dot or mil-hash reticle to match, or you can get MOA clicks and a MOA reticle if that's how you are trained. With a 35-mm tube, the zero-stop EREK elevation knob typically gives at least 72 MOA up from the zero-stop, which is roughly equivalent to a 100-MOA total elevation scope on a 20-MOA base. Needless to say, the SN-3 has more than enough elevation for any rifle. Priced starting at about $2000, the optical clarity and low-light performance are better than the Leupold and Nightforce scopes.

This US Optics SN-3 provides 90 half-MOA clicks per turn of its EREK elevation knob; its windage knob has 0.25-MOA clicks. The reticle has MOA hash marks to match.

The 35 mm tube on this US Optics SN-3 allows over 21 mils (72 MOA) of elevation from a 100-yard zero, especially useful with the .338 Lapua Magnum cartridge.