How to Sight In an Air Rifle, Step by Step

• Parallax adjustment.AO ring on the front bell or a side-focus wheel, focusing to roughly 10 yards or closer. If the spec sheet says “fixed 100 yards” or lists no parallax adjustment, it is a firearm scope.
• The rail type, and a stop pin if you need one.A dovetail (11mm / 3/8 in) rail is a smooth trapezoidal groove — nothing but friction stops the scope walking backwards under repeated recoil. A scope stop pin, a small vertical peg that seats into a hole in the receiver, restores a mechanical lock. Essential on a magnum springer, rarely needed on a PCP or a low-power gun. Weaver/Picatinny rails resist creep mechanically and need no pin.
• Ring and base screws, tightened and then re-checked.A scope that moves between shots produces a “wandering zero” that looks like a rifle problem and is a mount problem.
• One pellet, chosen in advance.Every barrel has preferences and switching pellets mid-session invalidates everything you have done. Pick a quality domed pellet and stay with it — our pellet guide covers the choice.
• A rated backstop.Not optional and not an accessory. Check the trap’s rating against your rifle’s energy and caliber.
• Pump count, if it is a multi-pump. Pump count changes velocity and therefore point of impact. Pick a count, zero at it, and use it.

Hawke Vantage 4-12x40 AO — for the shooter who needs a scope that actually focuses at airgun range.Our overall air rifle scope pick, with an AO ring that focuses to 10 yards. Honest cons: rings are not included, and Hawke publishes no spring-piston durability rating — users report support capping it at 12 fpe, so magnum springer owners should look at a scope explicitly reinforced for piston airguns.

JSB Match Diabolo Exact (domed) — for the shooter who wants one pellet to zero with and keep using.Our best-overall-accuracy pick, and a domed pellet is the right profile for both zeroing and hunting. Honest con: it is not the cheapest tin, and your barrel may still prefer something else — which you only discover by testing.

Highwild Bullet Trap Box — for the shooter zeroing a full-power .22 in a garden or garage. A steel trap box rated for .22 and .17 rimfire, which puts it well clear of any air rifle energy. Honest con: it is heavy, and no trap is a substitute for a safe backdrop behind it.

10-meter air rifle paper targets — for anyone who wants to measure a group rather than guess at it.Printed grids make measuring group centre to point of aim straightforward, which is the whole adjustment calculation. Honest con: they are sized for 10 meters, so at 25 yards the aiming black is small — which is arguably a feature.

More options in our air rifle scope guide and pellet trap guide.

The one rule underneath all of those: zero for the distance you shoot most, then learn holdover for everything else. A zero chosen because it sounds impressive is a zero that is wrong most of the time.

1. Set up a solid rest.A sandbag or a padded rest under the forend, and a bag or your off hand under the butt. On a springer, rest the rifle on your hand rather than resting the forend directly on a hard bag — a hard rest under a recoiling springer throws shots.

2. Set the parallax. Dial the AO ring or side wheel until the target is sharp and the crosshair stops crawling when you move your head slightly behind the scope. Do this before you fire anything.

3. Get on paper at 10 yards. Fire a three-shot group at a close target to confirm the rifle is hitting where you can see it. If it is off the paper entirely, bore-sight by eye on a single-shot rifle where you can see through the barrel, or move closer still.

4. Move to your chosen zero distance and shoot another three-shot group. Three shots, every time. A single shot tells you nothing on an air rifle, where pellet-to-pellet variation and hold variation both matter.

5. Measure from the centre of the groupto your point of aim, then dial the turrets. Turret values vary — check whether yours are 1/4 inch at 100 yards (which is 1/16 inch at 25 yards, so adjustments feel tiny) or a metric equivalent. This is the step where people over-correct: at airgun distances a few clicks go a long way.

6. Fire one settling shot after every adjustment before judging the result. Scope erector tubes are spring-loaded and often need a shot to take up the slack after a change.

7. Shoot a confirming group. Repeat steps 5 and 6 until the group centre sits where you want it. Then shoot one more group cold, after a short break, to confirm it holds.

8. Re-check the mount screws after about twenty shots, particularly on a springer. A zero that drifts over a session is almost always a mount, not a scope.

A spring-piston or gas-piston rifle fires a heavy piston forward, then the rifle recoils backwards and forwards again — all while the pellet is still travelling down the barrel. If you hold the rifle rigidly, you are fighting that movement, and you fight it slightly differently every shot. The groups open up and no amount of turret adjustment helps.

The artillery hold is the counter-intuitive fix. In practice:

• Rest the forend on your open palm, well forward, not gripped.
• Let the rifle sit in the shoulder with light contact rather than pulled in hard.
• Trigger hand relaxed, no thumb wrapped tightly over the stock.
• Most importantly, be consistent. The same hand position, the same forend contact point, the same cheek weld, every shot. The hold does not have to be perfect; it has to be identical.

PCPs and multi-pump pneumatics have essentially no recoil, so none of this applies to them — which is exactly why they are so much easier to shoot accurately. The comparison is in PCP vs break barrel.

This is the step almost everyone skips, and it is the one that turns a zeroed rifle into a rifle you can hunt with. A pellet’s arc is steep, so a 25-yard zero means you are shooting slightly low at 10 yards, dead on at 25, and dropping fast by 40.

Shoot three-shot groups at 10, 15, 20, 30 and 40 yards with your zero pellet and write down how far above or below the crosshair each group lands. That card — taped to the stock, or memorised — is worth more than any ballistic app, because it is your rifle, your pellet and your hold.

Then use the parallax ring as the rangefinder it is: dial until the target snaps into focus, read the distance, and apply the holdover from your own card. Knowing whether a squirrel is at 20 or 35 yards is the difference between a clean shot and a wounded animal, and the honest range limits of the whole category are covered in best air rifles for hunting.

Check the scope focuses at 10 yards. Check the mounts, and fit a stop pin if the rail is a dovetail and the rifle is a springer. Set up a rated trap. Pick one pellet. Get on paper at 10 yards, then move to 20-25 for hunting or 10 meters for paper.

Shoot three-shot groups from a rest, adjust from the centre of the group, fire a settling shot after each adjustment, and re-check the screws after twenty rounds. If it is a springer, hold it loose and hold it the same way every time. Then map your drop at 10, 15, 20, 30 and 40 yards and keep the card.

For the crossbow version of this job, see how to sight in a crossbow.