Rifle scope parallax is often misunderstood. Here is a simple guide to how parallax works and how it applies to rifle shooting.

The Trijicon Tenmile 3-18x44 is an excellent first-focal plane optic for technically inclined hunters who like to dial for longer shots.

It sports parallax focus on its objective bell—a rare feature for a fixed-power riflescope—and it has a whopping 28.5-foot field of view at 100 yards. ($80; hawkeoptics.com) ...

Fixed parallax rimfire scopes are usually set at 50 or 60 yards, which can work fine for small-game hunting but makes 20- or 25-yard shots—common in many small-bore sports—a blurry mess.

Barska Tactical Scopes are designed to give users as much control as possible for extreme-type shooting. The scopes have been designed with features like parallax adjustments ...

The side-focus parallax adjustment ranges from 27 yards to infinity and the integrated illumination control is also located on the side of the center of the scope, making adjustment in the field ...