Buying guide
Best .17 HMR & .17 WSM Gear for Long-Range Varminting
The .17 magnum rimfires are the only cartridges that let you shoot genuinely flat past a hundred yards without a centerfire budget — and almost every piece of gear that works on a .22 LR is the wrong choice for them.
The short version
- The .17 HMR is a necked-down .22 WMR case driving a very light, high-velocity bullet. The .17 WSM is a separate and considerably faster cartridge on a different case, with a far narrower selection of rifles and ammunition behind it.
- Your .22 LR scope is the wrong scope. Rimfire glass is typically parallax-set at 50 yards. The .17 magnums are shot at ranges where that setting works against you — you want 100 yards or an adjustment.
- Wind is still the limiting factor. A very light bullet leaves fast and sheds velocity quickly. Flat trajectory does not mean wind-proof, and misreading wind is what actually costs hits at distance.
- Ammunition cost changes the whole calculus. Magnum rimfire is a multiple of .22 LR per round, and neither cartridge is practically reloadable. Volume plinking is not what these are for.
The two cartridges, honestly compared
Both are magnum rimfires firing a .17 calibre bullet at velocities no .22 LR approaches. They are not interchangeable, they do not share rifles, and the practical differences matter more than the twenty-thousandths of an inch between the bore diameters would suggest.
| .17 HMR | .17 WSM | .22 WMR | |
|---|---|---|---|
| Parent case | Necked-down .22 WMR | Necked-down industrial blank case | Its own case, the original magnum rimfire |
| Relative velocity | High | Highest of the three | Moderate |
| Rifle availability | Very good — most makers offer one | Limited | Very good |
| Ammunition availability | Good, multiple loadings | Thin, few loadings | Good |
| Relative cost per round | $$ | $$$ | $$ |
| Best at | Flat shooting to extended rimfire distances | Maximum reach and energy in a rimfire | Closer work where the heavier bullet is useful |
The honest summary: .17 HMR is the one to buy unless you have a specific reason not to. The rifle selection is broad, the ammunition is stocked nearly everywhere magnum rimfire is stocked, and the trajectory advantage over .22 LR is dramatic rather than marginal.
The .17 WSM is genuinely faster and reaches further, and it is a legitimate choice if that reach is the whole point. But the rifle market behind it has never been deep, ammunition selection is narrow, and a cartridge with thin supply lines is a cartridge that can become awkward to feed. Go in with that understood rather than discovering it later.
Optics: what changes from .22 LR
This is the most common and most expensive mistake made when people move up from .22 LR: they move the rimfire scope across.
A dedicated rimfire scope is typically parallax-free at 50 yards, which is correct for the distances a .22 LR is shot at and wrong for a cartridge whose entire purpose is reaching past a hundred. Used at 150 or 200 yards, a fixed 50-yard parallax setting puts the reticle and the target image on different planes and makes head position an accuracy variable exactly when you can least afford one.
Side-focus varmint scopes, 4–16× and up
- ParallaxSide focus, or fixed at 100 yd minimum
- MagnificationHigher than .22 LR use warrants
- ReticleFine crosshair or holdover tree
- TurretsRepeatable, ideally with a zero stop
Varmint targets are small and the distances are long, which is the one situation where high magnification genuinely earns its place. Side focus lets you dial parallax out at whatever range you are actually shooting, which matters more here than on any .22 LR.
A fine reticle is worth seeking out. Coarse duplex posts that are fine on a squirrel at forty yards will cover the entire target at two hundred, and you cannot aim at what you cannot see past.
Bottom lineIf you buy one thing after the rifle, buy glass with side focus. Moving your .22 scope across is a false economy.
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Laser rangefinder
- FunctionRanges the target before the shot
- Why hereTrajectory is flat but not flat forever
- Best featuresAngle compensation, fast acquisition
- Field useCompact, one-handed
Flat trajectory reduces the penalty for misjudging range — it does not remove it. Past a certain distance the .17 magnums start dropping steeply, and the difference between a hundred and eighty yards and two hundred and forty is the difference between a hit and a miss on a small target.
For field varminting where distances are genuinely unknown and vary shot to shot, a rangefinder converts guesswork into a number. It is the accessory that most improves hit rate per dollar spent.
Bottom lineThe highest-value non-optic purchase for anyone shooting these cartridges at real distance.
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One further note carried over from .22 LR: check the turret calibration before you trust it. Scopes marketed toward rimfire sometimes use quarter-inch-at-fifty-yards clicks rather than true quarter-MOA, and on a cartridge you will actually be dialling for at distance, that discrepancy compounds. Run a box test at 100 yards and write down what a click is really worth.
Support gear for field varminting
The .17 magnums are shot from positions .22 LR shooters rarely use: prone on uneven ground, off a truck bonnet, seated behind sticks in a hedgerow. Support gear stops being a range accessory and becomes the thing that determines whether the shot happens at all.
Bipods with adjustable legs
- HeightProne or sitting height
- LegsNotched or fully adjustable
- Useful featureCant and pan under load
- MountSling stud or Picatinny
For static varminting from a fixed position — watching a burrow field, sitting over a permission at dusk — a bipod is the correct answer and the extra cost of independently adjustable legs pays for itself the first time the ground is not level, which is every time.
Look for a head that allows cant and pan without dismounting. Tracking a moving target with a locked bipod means lifting the rifle, and lifting the rifle means starting the position again.
Bottom lineBuy adjustable legs, not fixed. The price difference is small and the field difference is not.
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Shooting sticks and field tripods
- ConfigurationBipod, tripod or quad sticks
- HeightSeated to standing
- WeightThe deciding factor
- Best forMoving between positions
When you are covering ground rather than sitting still, sticks beat a bipod outright — they deploy standing or seated, they work on terrain where prone is impossible, and they come up in a couple of seconds.
Quad sticks give the steadiest standing position available without a rest; tripods are a good compromise; bipod sticks are the lightest and the least stable. Buy on carry weight, because the set you leave in the truck helps nobody.
Bottom lineIf your varminting involves walking, buy sticks before you buy a bipod.
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Front rest and rear bag set
- FrontAdjustable pedestal or bag
- RearSand-filled, eared
- UseZeroing, ammunition testing
- FillSand or heavy media
Because magnum rimfire ammunition is expensive and rifles are noticeably particular about which loading they prefer, testing is worth doing properly. A proper front rest and rear bag removes you from the equation well enough that the differences you see on paper are real differences between loads.
This is a range purchase rather than a field one, but it is the tool that tells you which ammunition to buy in quantity — which at magnum rimfire prices is a decision worth getting right.
Bottom lineWorth it specifically because the ammunition is expensive. Testing properly costs less than buying the wrong case.
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Magazines and the semi-auto question
Two things worth knowing before you buy.
First, magnum rimfire magazines do not interchange with .22 LR magazines. The cases are longer and the geometry differs. Capacities are lower, the aftermarket is far thinner, and for older or discontinued rifles the factory magazine may be the only one that has ever been made. Buy spares while your platform is current rather than when you need them.
Second, semi-automatic magnum rimfire has a complicated history. The .17 HMR operates at pressures that a simple blowback action — the mechanism almost every .22 LR semi-auto uses — is not well suited to, and the industry learned this publicly. Rifles that handle it do so with a deliberately engineered action rather than a scaled-up .22 blowback. The practical guidance: a bolt action is the default and safest choice in these cartridges, and if you want a semi-auto, buy one designed from the outset for the pressure rather than a .22 design adapted.
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A .17 bore is not a .22 bore
A .17 bore is small enough that a jag or brush intended for .22 will not pass, and forcing one is how rods get stuck and bores get damaged. Buy .17 calibre rods, jags, brushes and patches specifically. The rod itself needs to be correspondingly thin, which makes it more prone to flexing — a bore guide matters more here than on a .22, not less.
The same crown protection rules apply and apply harder. Clean from the breech where the action allows it, use a guide where it does not, and never use a segmented aluminium rod in a small bore.
Fouling character differs too. Magnum rimfire bullets are jacketed or plated rather than bare lubricated lead, so you see less of the waxy residue that defines .22 LR fouling and slightly more conventional copper and carbon. That makes the cleaning routine marginally closer to centerfire practice — but the seasoning principle still applies, and stripping a .17 barrel to bare metal before a day's shooting is still a way to spend your first several shots re-establishing what you just removed.
Ammunition, availability and cost
This is where the cartridge choice becomes a budget decision.
Magnum rimfire costs a substantial multiple of .22 LR per round, and neither cartridge can be practically reloaded — rimfire priming is integral to the case rim, so the handloading escape valve that centerfire shooters use does not exist here. What you pay at the counter is what shooting costs, permanently.
That reframes how the cartridge should be used. The .17 magnums are not plinking rounds; they are precision tools for shots that matter, and a session is measured in dozens of rounds rather than in bricks. Anyone wanting volume should keep a .22 LR alongside — which is exactly what most .17 owners actually do.
Availability is worth watching independently of price. Magnum rimfire is a lower-volume product line than .22 LR, and lower-volume lines are the first to thin out when supply tightens. If your rifle has demonstrated a clear preference for one specific loading, buying that loading in depth when you see it stocked is sensible rather than paranoid.
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Ammunition shipping is restricted or banned outright in several states and many municipalities, and some jurisdictions require a licensed FFL or a permit as the delivery point. Rules change often and retailers enforce them at checkout, not before. Confirm your own state and city requirements with the retailer and your state attorney general's office before you place an order.
Legal and practical limits
Rimfire cartridges are restricted for certain species and in certain jurisdictions, and the rules are written in terms of caliber, energy or cartridge type rather than in terms of what a rifle is capable of. Some jurisdictions prohibit rimfire for particular game entirely; others specify minimum energy figures that magnum rimfire may or may not meet. Requirements differ by state and sometimes by county or wildlife management unit, and they change between seasons. Confirm the current rules with your own state wildlife agency before you rely on any of this. Nothing here is legal advice.
The practical limit is separate from the legal one, and it is wind. A very light bullet leaving very fast still sheds velocity quickly, and by the time it has travelled two hundred yards a crosswind has had a meaningful amount of time to work on it. Flat trajectory solves the vertical problem and leaves the horizontal one entirely intact — which is why experienced varmint shooters spend their attention on wind rather than on drop.
What to buy first
- Glass with side focus. Non-negotiable, and the single change that most improves results over a repurposed .22 setup.
- A rangefinder. Converts the flat trajectory from a theoretical advantage into hits.
- Support that matches how you hunt. Sticks if you walk, a bipod if you sit. Buying the wrong one is how it ends up in the truck.
- Calibre-correct cleaning tools. Cheap, and the alternative is a rod stuck in a bore.
- Spare magazines, early. This aftermarket is thin and gets thinner.
And do the load testing properly before you buy ammunition in quantity. At magnum rimfire prices, an afternoon spent finding out what your rifle prefers is the cheapest investment on this list.
Frequently asked questions
Is .17 HMR better than .22 LR?
Different, not better. The .17 HMR shoots dramatically flatter and reaches much further, which is exactly what you want for varminting at unknown distances. It also costs a multiple of .22 LR per round, is louder, and is overkill for close-range plinking. Most people who own one keep a .22 LR alongside it, and that is the correct answer rather than a compromise.
Can I use my .22 LR scope on a .17 HMR?
You can mount it, but the parallax setting is probably wrong. Dedicated rimfire scopes are usually parallax-free at 50 yards, and the .17 magnums are shot at ranges where that setting introduces error precisely when precision matters most. Buy glass with side focus, or at minimum a scope set for 100 yards. This is the most common expensive mistake when stepping up.
Is .17 WSM worth it over .17 HMR?
Only if maximum reach is genuinely the point. The .17 WSM is faster and carries further, but the rifle selection has never been deep and ammunition loadings are few. That combination makes it a cartridge you can find yourself struggling to feed. For the large majority of varmint shooters, .17 HMR gives most of the capability with none of the supply anxiety.
Are semi-automatic .17 HMR rifles reliable?
It depends entirely on how the action was designed. The cartridge operates at pressures that simple blowback actions — the mechanism nearly every .22 LR semi-auto uses — are poorly suited to, and the industry learned this the public way. Rifles that handle it are engineered for the pressure rather than adapted from a .22 design. A bolt action is the default choice; if you want a semi-auto, buy one built for the cartridge from the outset.
Can .17 HMR be reloaded?
Not practically. Rimfire priming compound is spun into the rim of the case during manufacture, so there is no primer pocket to reprime and no realistic way to recharge a case at home. That applies to every rimfire cartridge. What you pay per round is what shooting costs, which is worth factoring in before choosing magnum rimfire as a high-volume proposition.
How far can you shoot a .17 HMR?
Further than a .22 LR by a wide margin, with the practical ceiling set by wind rather than by drop. The bullet is very light, so although it leaves fast and shoots flat, a crosswind moves it noticeably at extended range. Legal and ethical limits matter more than mechanical ones — for live quarry, your maximum range is the distance at which you can reliably place shots precisely under the conditions on the day.
Do I need special cleaning tools for a .17?
Yes. A .22 jag or brush will not pass through a .17 bore, and forcing one is how rods become permanently stuck. Buy .17 calibre rods, brushes, jags and patches. Because the rod is necessarily thin and therefore flexible, a bore guide matters more here than on a larger bore, and the same rules about avoiding segmented aluminium rods and protecting the crown apply with extra force.