How to choose a long-range riflescope
Magnification
For long-range precision and PRS, a 4.5-29x or 5-30x range handles 800 to 1,200 yards and more. The scopes here run from the Helos BTR GEN2 2-12x42 and the Kite B6 LR 3-18x50 up to the Ares ETR GEN2 UHD 15-60x56.
Tube and elevation
Distant targets take elevation travel, and a 34 mm tube generally allows more of it than a 30 mm one. The Cronus BTR GEN2 UHD 4.5-29x56 has 110 MOA or 32 MIL of elevation, and the Helos BTR GEN2 6-24x56 29 MIL on a 34 mm tube.
Turrets and zero stop
Exposed turrets let you dial for distance, and a zero stop lets you spin back to your confirmed zero until the turret stops, with no counting clicks in the dark. The Ares ETR GEN2 UHD 4.5-30x56 and 15-60x56 and the Heras SPR add a locking windage turret, which you pull up to adjust and push down to lock.
Frequently Asked Questions
MIL or MOA?
Whichever your shooting community uses: MIL is the dominant standard in PRS competition, and MOA may feel more natural if you think in inches. The one wrong choice is mixing systems between turrets and reticle.
Is a 34 mm tube worth the weight?
For long range past 600 to 800 yards, yes, for the extra elevation travel. Under 500 yards a 30 mm tube works well and saves several ounces.
What is parallax?
The apparent shift of the reticle against the target when your eye moves behind the scope. A side-focus knob removes it at your shooting distance, which matters most in precision work.
For Athlon's eleven lines compared on focal plane, tube, glass and elevation travel, read Athlon Riflescopes Explained, and for our long-range picks, Best Riflescopes for Hunting and Precision Shooting in 2026.