Best Long-Range Rifle Scope: How to Choose
Past a few hundred yards, the rifle stops being the limiting factor and the scope takes over — it's the system that turns a known come-up into a hit on a distant steel plate. A long-range rifle scope needs a first focal plane reticle, turrets and a reticle in matching units, enough elevation travel to reach your distance, adjustable parallax, and above all tracking that moves true and returns exactly to zero. Glass and magnification get the attention, but repeatable tracking is what actually puts rounds on target. Here's how to choose, and where Accufire's ATRO-20 fits.
Key takeaways
- First focal plane is the long-range standard — the reticle scales with magnification so holdovers and ranging stay true at any power.
- Match your turret unit to your reticle (MOA with MOA, or MRAD with MRAD) so a correction you see dials straight onto the turret.
- Tracking beats glass: a long-range scope must move exactly as the turret says and return to zero — confirm it with a box test.
- The Accufire ATRO-20 ($649.25) is an FFP 2.5–20×50 with 0.1 mrad clicks, a mil reticle, and 50 yd–∞ parallax — a capable mid-to-long-range scope at an accessible price.
What "long range" actually demands
Long-range shooting is a dialing-and-holding game, and the scope has to support it. Five things matter most. First focal plane keeps your reticle's subtensions accurate at every magnification, so you can range and hold at whatever power the light and mirage allow — read more in FFP vs SFP. Matched units mean your turret and reticle both speak MOA or both speak MRAD; mixing them is how shooters miss — see MOA vs MRAD. Elevation travel has to reach your maximum distance with your cartridge. Adjustable parallax removes reticle shift at distance. And tracking — the scope returning exactly to zero after you dial — is the foundation everything else rests on.
Magnification, objective, and tube
More magnification helps you see a distant target, but it isn't a simple "more is better." A 15–20× top end reaches well past 800 yards for most shooters, and a versatile 2.5–20× covers field and precision work on one optic. Higher power also narrows the field of view and amplifies mirage and wobble, so very high magnification is most useful for deliberate, supported fire. A larger objective (a 50 mm lens is common) brightens the image and helps the exit pupil at high power, at the cost of weight and mounting height. Tube diameter — 30 mm or 34 mm — affects how much elevation travel the scope can offer; a 34 mm tube generally allows more, which is why dedicated extreme-long-range scopes favor it.
Tracking is king
Before you trust any long-range scope, prove it tracks. Dial a known box — up, over, down, back — and confirm the reticle lands exactly where it started; repeat at distance against a measured target. A scope that doesn't return to zero will scatter your dope no matter how clear the glass. The Accufire ATRO-20 uses 0.1 mrad (one-tenth milliradian) clicks with a matching mil reticle, so what you read in the reticle dials straight onto the turret. Learn the click math in how to adjust a rifle scope, then confirm your zero with how to zero a rifle scope.
How to choose: the honest shortlist
There's no single "best" long-range scope — only the right one for your distance, discipline, and budget. Vortex (Viper PST, Razor HD), Athlon (Ares ETR, Cronus), Nightforce (NX8, ATACR), and Primary Arms (GLx) span the value-to-premium range. Accufire's position is a manufactured-not-white-labeled FFP precision optic at an accessible price. Here's how its two scopes line up for distance:
| Model | Magnification × objective | Focal plane | Adjustment | Price | Best for |
|---|---|---|---|---|---|
| Accufire ATRO-20 | 2.5–20×50 | First focal plane | 0.1 mrad clicks, mil reticle | $649.25 | Mid-to-long-range precision |
| Accufire EVRO-12 | 2.5–20×50 | First focal plane | 0.1 mrad clicks, locking turrets | $479.00 | Value precision, entry to distance |
The ATRO-20 is the long-range pick of the two; the EVRO-12 is the value entry that still brings FFP and 0.1 mrad turrets. Both adjust parallax from 50 yards to infinity. For the full decision framework, see our rifle scopes buyer's guide.
Honest limitations
Straight talk on the trade-offs. A 2.5–20× on a 30 mm tube is an excellent value for mid-to-long range, but the most demanding extreme-long-range and competition shooters — reaching past roughly 1,000 yards, or fighting heavy mirage — often want a higher top-end magnification, a 34 mm tube for more elevation travel, and a larger objective, and they pay a lot more for it. FFP reticles also look thin at the lowest power, the trade for accurate holdovers everywhere. Buy for the distance you actually shoot and the dope you'll actually verify, not the distance on the box.
Stretching your rifle's legs? Accufire builds the ATRO-20 and EVRO-12 in-house — first focal plane, 0.1 mrad turrets, mil reticles — at prices that leave budget for ammo and trigger time — shop the Accufire rifle scope collection.
Accufire ATRO-20 Advanced Tactical Rifle Scope — $649.25. A first focal plane 2.5–20×50 on a 30 mm tube with 0.1 mrad clicks, a matching mil reticle, and 50 yd–∞ side parallax — a capable mid-to-long-range precision scope. View the ATRO-20.
Frequently asked questions
What magnification do I need for long range?
It depends on distance and discipline. Many shooters reach well past 800 yards with a 15 to 20 power top end, and a versatile 2.5 to 20 power scope covers most field and precision use. Extreme long range and competition often favor higher top-end magnification, but more power also narrows the field of view and magnifies mirage and wobble.
Is first or second focal plane better for long range?
First focal plane is the usual choice for long range because the reticle scales with magnification, so the holdover and ranging marks stay accurate at any power. That lets you hold or range at whatever magnification the conditions allow. Accufire's ATRO-20 and EVRO-12 are both first focal plane.
What is more important, glass or tracking?
Both matter, but tracking comes first. A long-range scope has to move the point of impact exactly as the turret says and return precisely to zero, every time. Confirm it with a tracking or box test before you trust your dope. Glass quality helps you see the target and read mirage, but a beautiful image that does not track will still miss.
How much elevation travel do I need?
Enough to reach your maximum distance with your cartridge, plus margin. A canted or tapered base, often twenty MOA, gives you more usable elevation by starting the scope lower in its range. Check your cartridge's drop at your target distance against the scope's total elevation travel before buying.
Is the Accufire ATRO-20 a long-range scope?
The ATRO-20 is a first focal plane 2.5 to 20 power scope on a 50 millimeter objective and a 30 millimeter tube, with 0.1 mrad clicks, a matching mil reticle, and side parallax adjustment from 50 yards to infinity. That makes it a capable mid to long range precision scope at an accessible price. For extreme long range past about 1,000 yards, some shooters prefer even higher magnification and a larger tube for more elevation.
Start with first focal plane, match your units, confirm it tracks, and buy enough elevation for your distance — that's a long-range scope chosen right. Go deeper with our guides on choosing a rifle scope, parallax, and reticle types.