Cold-weather rimfire shooting: velocity, zero shift, lubrication and winter gear

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Quick answer

Cold doesn't stop .22 LR from working, but it can change velocity and therefore zero, mostly past 50 yd. Owner chronograph data shows SK Pistol Match at 1,140 fps at 94 °F vs 1,109 fps at 72 °F, and Lapua Midas+ rising from about 1,075 to 1,093 fps between 58 and 85 °F. A lab test of Federal Champion frozen at -20 °F showed no loss of consistency. Keep ammo and rifle at the same temperature, check zero, oil lightly and manage condensation.

What the data shows

Test	Conditions	Result	Confidence
Owner test: SK Pistol Match, Vudoo, 26 in barrel, 25 shots each ^[1]	94 °F vs 72 °F	1,140 fps vs 1,109 fps (SD 8.7 vs 13)	Low–medium (one rifle, one lot)
Owner log: Lapua Midas+, Vudoo, 22 in barrel ^[1]	58 °F to 85 °F	1,074.8 to 1,092.9 fps	Low–medium
Same thread, follow-up ^[1]	90+ °F down to the mid-30s	Minimal point-of-impact effect at 50 yd; wind mattered more	Low
Brass Fetcher lab test: Federal Champion 36 gr, Walther P22 pistol ^[2]	Ammo held at -20 °F for 6 days	Same 30 fps SD as room-temperature ammo; slightly higher average velocity	Medium (pistol, one load)

The takeaway: some loads lose velocity as they cool, some barely change, and the effect is small at 50 yd but grows with distance. Test your own lot. Our drop charts show why: a few dozen fps matters far more at 150 yd than at 50.

Practical rules for winter shooting

Keep ammo and rifle at ambient. Don't shoot ammo straight from a warm pocket into a cold barrel, or the reverse; mixed temperatures mean mixed velocities.
Check zero at the start of the cold season and log it with the temperature.
Fire fouling shots. Owners widely report first rounds from a cold, clean barrel going astray; see cold-bore troubleshooting and the long-running "cold barrel blues" thread ^[3].
Expect slower semi-auto cycling with thick lubricant; standard-velocity loads may short-stroke more in the cold.

Our range results (coming soon)

This box will hold our own groups, chronograph data and photos for this topic once we've shot and recorded them. Until then, every accuracy number on this page comes from the published source cited next to it. We have not tested these rifles or products hands-on for this article.

Lubrication and corrosion

Go light. Heavy grease and thick oil stiffen in the cold and can slow strikers and bolts. Wipe off excess and leave a thin film.
Follow your owner's manual for lubrication points and products: ^[4] ^[5].
Products we link: Rimfire Blend for the bore, Tipton patches, a nylon-coated rod and a bore guide (CZ bore guide).

Condensation: the hidden risk

Bringing a cold rifle into a warm house makes moisture condense on and inside the action, barrel and scope mounts. Either leave the rifle cased for a few hours so it warms slowly, or leave it in a cold, dry space overnight before cleaning. Then wipe it down and re-oil lightly. Never store a gun wet in a closed case. More in cleaning and maintenance.

Optics and electronics

Batteries lose capacity in the cold; carry spares for illuminated reticles, the chronograph and the Kestrel.
Fogging: keep scope caps on until you shoot and avoid breathing on the eyepiece.
Turrets can stiffen; check that clicks still track.

Shooter comfort and safety

Thin shooting gloves keep trigger feel; wear mitts over them between strings.
A shooting mat keeps you off frozen ground for prone stages.
Ice and frozen ground raise ricochet risk; check your backstop. A .22 bullet can travel over 1.5 miles ^[6].
Carry a first-aid kit (Adventure Medical Sportsman 400).

Winter hunting with a .22

Squirrel and rabbit seasons often run through winter. Bare trees open up shots, but cold hands and gloves make trigger control harder. Zero for the conditions, pick a load that groups well when cold, and keep shots within your proven distance. See best .22 for squirrels.

Cold-weather checklist

Item	Why
Ammo at ambient temperature	Consistent velocity
Zero check plus temperature log	Track seasonal shifts
Light oil only	Reliable striker and bolt
Spare batteries	Scope, chronograph, weather meter
Slow warm-up indoors	Limit condensation and rust
Hand warmers, gloves, mat	Trigger control and comfort

Recording winter data

If you keep dope cards, add a temperature column. A Garmin Xero C1 Pro chronograph and a Rite in the Rain notebook make it easy to log velocity by temperature for your lot, which is better than any rule of thumb.

A simple seasonal test you can run

Pick one lot of ammo and keep a box aside for the test.
On a warm day, chronograph 10–25 rounds and shoot two 10-shot groups at 50 yd and 100 yd; record temperature.
Repeat on a cold day with the same rifle, rest and targets, letting ammo and rifle sit at ambient for at least 30 minutes.
Compare average velocity and point of impact. If 100 yd impacts move but 50 yd impacts don't, you've found the distance where temperature matters for your setup.

That's exactly the kind of data we plan to publish in the range-results box above once we've recorded it.

Storage between winter sessions

Store ammo indoors at a stable temperature rather than in a vehicle or unheated shed, where it cycles between cold and warm. Keep rifles in a dry place; a dehumidifier or desiccant in the safe helps in damp climates.

Common winter mistakes

Warming ammo on a dashboard or heater vent, then shooting it in freezing air.
Oiling heavily "to protect against rust," which gums up in the cold.
Trusting a summer dope card at 100+ yd without a check.
Leaving a cased rifle in a warm truck cab after a cold day, which traps condensation.

Clothing that helps you shoot better

Layer so you can kneel and go prone without fighting bulky clothing. A thin, close-fitting shell over the shoulder pocket keeps the stock from slipping. Keep your trigger hand warm with a hand warmer in a pocket between strings; cold fingers pull shots more than cold ammo does.

FAQ

Does cold weather affect .22 LR accuracy?

It can change velocity, which shifts point of impact, mostly past 50 yd. Published owner tests show anywhere from minimal change to about 30 fps across 20+ °F.

Will .22 LR fire in extreme cold?

In Brass Fetcher's test, Federal Champion ammo held at -20 °F fired with the same consistency as room-temperature ammo.

Should I use different lubricant in winter?

Use a thin film of light oil and avoid heavy grease, which stiffens in the cold. Follow your owner's manual.

How do I prevent rust after cold-weather shooting?

Let the rifle warm slowly to limit condensation, then wipe it down and re-oil lightly.

Sources

Confidence: maker specs and prices are high confidence as of the date seen; forum and owner reports are low–medium confidence and labeled as such.

Not affiliated with Sako/Tikka, CZ, Bergara, Ruger, Savage or any retailer. We have not tested products hands-on for these guides; figures come from cited sources. Affiliate disclosure · Privacy · Terms · Rimfire Builds is operated by Tomahawk Designs LLC, Utah · contact@rimfirebuilds.com