.17 HMR AMMO KEY INFO

The .17 Hornady Magnum Rimfire (HMR) was introduced in 2002 by Hornady as a high-velocity, rimfire cartridge derived from the .22 Magnum case necked down to .17-caliber. Designed for precision and flat trajectory, the .17 HMR gained popularity among varmint hunters and target shooters for its good accuracy and hitting power out to 200 yards or more. Standard .17 HMR ammo typically fires a 17-grain V-MAX or TNT hollow point bullet at speeds around 2550 FPS, offering explosive impact on small game while maintaining low recoil.

Compared to other rimfire cartridges like the .22 LR or .22 WMR, the .17 HMR offers superior ballistic performance, including flatter trajectories and higher energy at extended distances. It’s good for shooting prairie dogs, ground squirrels, rabbits, and even coyotes under the right conditions. While not as powerful as some centerfire varmint rounds, its blend of affordability, velocity, and accuracy makes the .17 HMR an outstanding choice for precision-minded rimfire shooters. Popular manufacturers like CCI, Hornady, Winchester, and Federal produce a wide variety of loadings, from polymer-tipped hunting rounds to jacketed hollow points, making it easy to tailor your ammo choice to your specific shooting needs.

Image from GunsAmerica Digest Test of CZ 455 .17 HMR/.22 LR Combo Rifle.

.17 HMR Ammo DEALS — CCI, Hornady, Remington, Winchester

Things to Know about .17 HMR Ammunition

Bullet Type & Weight: The standard bullet weight for .17 HMR is 17 grains, with options up to 20 grains for improved wind resistance and penetration. Polymer-tipped bullets expand rapidly on impact, while jacketed hollow points (JHP) offer deeper penetration.

Which is more powerful, .22 Mag or .17 HMR? While the .22 WMR (Magnum) may offer slightly more raw energy, .17 HMR delivers superior velocity and flatter trajectory, giving it better accuracy at long distances. For precision shooting, .17 HMR generally has the edge.

How does .17 HMR ammo compare to other rimfire cartridges? Compared to .22 LR or .22 WMR, .17 HMR shoots flatter, faster (typically 2500+ fps), and with greater accuracy at extended distances. It’s a top choice for rimfire shooters who demand high performance beyond 100 yards.

What is the effective range of .17 HMR? Good .17 HMR ammo is highly accurate up to 150–200 yards for small game and varmints. Some experienced shooters can push it beyond 200 yards with the right optics and wind conditions.

What is the best barrel length for .17 HMR rifles? A barrel length between 20–22 inches is optimal for .17 HMR, balancing velocity, maneuverability, and accuracy. Shorter barrels are lighter but may lose some velocity, while longer barrels offer slightly better ballistics at the cost of weight.

Is the .17 HMR good for beginners? Yes .17 HMR has low recoil, flat trajectory, and simple handling for new shooters. It’s an easy-shooting round that offers good performance with low recoil.

These tips come from the helpful Target Sports USA 17 HMR Ammo Guide. Readers can Click HERE to access Ammo Guide content and see .17 HMR ammo offerings at TargetSportsUSA.com.

.17 HMR and .22 WMR Options Enhance
Ruger Precision Rimfire for Varmint Work
Many readers may not know this, but the Ruger Precision Rimfire rifle is available in three rimfire chamberings: .22 LR, .17 HMR, and .22 WMR. While .22 LR ammo is considerably cheaper, .17 HMR and .22 WMR shoot flatter and deliver MUCH more energy. These .17 HMR and .22 WMR chamberings are way more suitable for varminting. In fact we think this .17 HMR transforms the Ruger Precision Rimfire into a very good “carry-around” varmint rifle. We really like the .17 HMR — it’s our favorite rimfire cartridge for small varmints out to 160 yards.

Both cartridge types, .17 HMR and .22 WMR, also offer higher velocities, less wind drift, and flatter trajectory than the .22 LR. This is a benefit when cross-training. You can shoot at more distant targets with considerably less elevation dialed in your scope. And the windage corrections will be less extreme.

Ruger says: “Faster, flatter and with high-performing bullets, .17 HMR and .22 WMR cartridges expand the capabilities of the Ruger Precision Rimfire platform. Like its .22 LR predecessor, these new magnum offerings maintain the same ergonomics, trigger and manual of arms as the larger centerfire Ruger Precision Rifle.”

Here’s an excellent video review of the .17 HMR Ruger Precision Rimfire rifle by YouTuber 22 Plinkster. The reviewer was impressed with the rifle’s accuracy with 17gr ammo.

Both Ruger Precision Rimfire rifles feature 18″ hammer-forged barrels threaded for muzzle devices, including the Ruger® Silent-SR®. The 15″ free-float handguard with Magpul M-LOK slots provides generous scope clearance and easy mounting of M-LOK-compatible rails and accessories.

Like its .22 LR version, the magnum Ruger Precision Rimfire models featured an adjustable bolt throw (that can emulate a centerfire action if desired), along with trigger that adjusts from 2.25 to 5 pounds. The .17 HMR and .22 WMR models ship with a 0 MOA Picatinny rail and one, 15-round BX-15 Magnum magazine or one, 9-round JMX-1 rotary magazine. The BX-15 Magnum mag works very well with the .17 HMR and .22 WMR chamberings.

The standard finish for the .17 HMR and .22 WMR Ruger Precision Rimfire rifles is Black hard-coat anodized. But there is also a Burnt Bronze Cerakote Special Edition available through Iron Valley Distributor.

When Hornady (and CCI) developed the 17 HMR cartridge, they really hit a home-run. And the rifle manufacturers quickly marketed some nice rifles to chamber this 17-cal rimfire round. But unlike .22 LR rifles which, typically, require very little cleaning, 17 HMRs demand frequent bore cleaning to maintain good accuracy. That’s because 17 HMRs shoot copper-jacketed bullets at 2550 fps velocities.

17-Cal Bore Guides — The Challenge
The problem is, it’s hard to find a well-designed, quality bore guide for 17-caliber rimfire rifles. With many 17 HMR (and 17 Mach 2) rifles, you encounter mechanical interference when you try to use a standard bore guide to protect the delicate chamber edge and the bottle neck area of the chamber. A fixed ejector is in the way. On many 17 HMR rifles, this little “shark fin” ejector is right in line with the chamber and is fixed — it doesn’t retract. Therefore the kind of bore guide you might use for centerfire rifles won’t work in 17 HMRs — it will hang up on the ejector.

Polymer bore guides exist for this type of action, but they are typically open-bottom designs that do not enter and seal the chamber. These open-bottom designs don’t protect the delicate chamber edge or the bottleneck area of the chamber, and they also allow some seepage of solvents out of the chamber. That’s why Roy Bertalotto created his RVB Precision Bore Guide for 17 HMR rifles. The 7075 aluminum tube on his Bore Guide is thin enough to pass by the ejector, yet it is extremely rigid. (Photos below.)

Roy explains: “My bore guide is made of 7075 anodized aluminum tubing, which is totally unaffected by any type of cleaning solution. One end is swagged down to fit completely into the chamber of a 17 HMR rifle. This guides your cleaning rod perfectly to the bore without touching the chamber walls or front edge of the chamber. The tight fit of the bore guide in the chamber also stops cleaning solvents from getting into the action, magazine, and trigger housing.” (Editor: Solvent seepage can do damage. We had a 17 Mach 2 rifle that rusted internally because solvents leaked past an open-bottom bore guide.)

Using the RVB 17 HMR Guide – Once the bore guide is in place, slide the supplied aluminum bushing over the tube, and gently push the bushing into the rear of the action. This centers the guide rod in the action to keep the guide rod tube aligned. Once the guide rod and bushing are in place, you can use a 17-caliber cleaning rod* with patches and/or brushes to clean the barrel. Use the rod normally, but make sure your patches are quite small and don’t apply too much pressure as these small-diameter rods can kink if you try to force over-size patches down the bore.

The RVB Precision 17 HMR Bore Guide costs $19.95 plus $5.00 shipping. To order, email Roy Bertalotto via rvb100 [at] comcast.net. Roy will then send you shipping/payment details.

Roy tells us: “Yes, I make the bore guides out of 1616 aluminum arrow shafts. The only material on earth that fits EXACTLY what is needed. I buy the shaft material as simple tubing from Easton. It is hard anodized, the perfect wall thickness and doesn’t look too bad either.”

* NOTE: You really do need a dedicated .17-cal cleaning rod for this job. Most other rods are too fat to pass through the barrel. Dewey Mfg. makes a decent 17-caliber cleaning rod that is reasonably stiff and doesn’t kink too readily. It is available in 7″, 11″, 18″, 26″, and 36″ lengths, either bare stainless steel or with a nylon coating. For use with the Bertalotto Bore Guide, we prefer the nylon-coated version, in either 26″ or 36″ lengths, depending on barrel length.

If you have a high comb on your rifle, you may need extra length to avoid interference with the rod handle. Use this formula to determine correct rod length: Length of barrel + action or breech rod guide length + 2-3″ clearance + high comb if applicable = total rod length needed.

There are other quality 17-cal cleaning rods, but we’ve used the Dewey and it functioned well. The nylon coating cleaned easily and was gentle on the throat and crown. You should clean the coating before and after each use to ensure it does not embed grit or other contaminants.

GunsAmerica Blog Review
GunsAmerica, a leading firearms buy/sell website, managed to get hold of one of these Ruger American Rimfire rifles, chambered in .22 LR. GunsAmerica’s staff put the rifle through its paces at the range, and came away very impressed. The test rifle shot sub-inch groups at 50 yards with Federal Lightning and CCI Stinger ammunition. We expect the rifle would shoot even better with quality, match-grade Lapua or Eley rimfire ammo. CLICK HERE for full GunsAmerica Rifle Review.

Given the smooth-working bolt, crisp 3-lb trigger, and comfortable stock with built-in bedding system, GunsAmerica concludes that this Ruger delivers a lot of performance for the $329.00 price. GunsAmerica’s writers are probably right in predicting that the Ruger American Rifle will be a hot-seller, stealing market share from other low-to-mid-priced rimfire brands (such as CZ):

“With this one new rifle Ruger has propelled itself to the front of the pack of the bolt-action rimfire market[.] While there are other great rimfire bolt guns out there at affordable prices, nobody is going to dispute that the Ruger American Rimfire has leapfrogged the entire market. The rifle is superb, and missing really nothing. These guns are going to fly off the shelves….”

At Media Day we test-fired the new 3000 FPS rimfire ammunition from Winchester. Shooting the new 17 Win Super Mag ammo from a pre-production Savage B.MAG rifle (more on that later) and a Browning m1885 falling block, we were able to shoot sub-minute-of-angle groups with a pretty primitive front rest and lumpy rear bag. So far, then, it appears the ammo is pretty darn accurate for a mass-produced rimfire cartridge. Savage has promised to send us a B.MAG rifle for further testing. Watch the video below for more details on this new cartridge.

New 3000 FPS Rimfire Round
Winchester has announced a new, high-velocity 17-caliber rimfire cartridge, the .17 Winchester Super Magnum (aka .17 Win Super Mag). The .17 Win Super Mag will initially be offered in three bullet types: 20gr plastic tip (Varmint HV), 25gr plastic tip (Varmint HE), and a 20gr JHP (Super-X). The 20-grain varieties boast a 3000 FPS muzzle velocity, earning honors as the fastest Rimfire ammo ever made.

Winchester claims that all .17 Win Super Mag ammo types shoot much flatter than the .22 Win Mag and .17 HMR, while delivering more than 150 percent more energy than both. In addition, the .17 Win Super Mag “bucks the wind” better than any other rimfire ammo — exhibiting significant less horizontal drift at extended ranges. The ammunition should be available at Winchester dealers by April 2013.

Click Boxes to View Larger Charts
[See image gallery at bulletin.accurateshooter.com]

The complete rifle comes standard with a straight fluted 18″ stainless barrel, A1 flash-hider, free-floating composite hand guard and two molded-plastic 10-round magazines. Options include a spiral-fluted barrel and MK3 railed upper receiver. Alexander Arms’ 17 HMR ARs will be offered in both fixed stock and collapsible-stock versions. The upper receiver kit includes all the ancillary items needed to convert existing AR15 lowers to work with the 17 HMR cartridge.

17 HMR Basics
If you are not familiar with the 17 HMR, it is a popular varmint cartridge effective out to 200 yards or so. With typical muzzle velocities of 2550-2650 fps, the little 17 HMR packs much more punch than a .22LR, while bucking the wind much better. CLICK HERE for Varmint Al’s 17 HMR webpage, which provides a comprehensive analysis of 17 HMR ballistics, kinetic enegy, and effectiveness on small varmints.

Video Showing Alexander Arms 17HMR Bolt Cycling in Slo-Mo

On its website, Alexander Arms reports: “Our initial production run will be 500 units. We are extremely pleased with this [17 HMR] caliber. With help from Hornady, this unit has been extensively tested and has proven itself to be very capable in the field. At the recent Big 3 Event, we ran two rifles out to ranges of 400 yards and despite windy conditions… the guns performed well. While running guns at the Big 3 we had an opportunity to run one of the rifles with the excellent magnum rimfire silencer from Thunderbeast Arms Corp. The rifle exhibited a slight shift in zero and ran without a hitch for the two days of the event. This unscheduled test provided a quick insight into the flexibility of the rifle and everyone agreed that this combination would serve well for any varminting purposes.”

For more info contact visit AlexanderArms.com or call at (540) 639-8356. You can also download the Alexander Arms’ 17 HMR Rifle Owners Manual as a PDF file.

A Sunny Day for Shooting in Thunder Bay
It was almost +10° C today and sunny so my girlfriend and I went shooting. Just thought I would share some photos. I’m in the process of breaking in my Savage model 12 LRPV in .204 Ruger. About a 15-minute snowmobile ride from our houses, we have our own private 900-yard range, with zero elevation change (it’s a lake in summer time). And I got to play with my new toy. My girlfriend Siiri bought me a Kestrel 3500 weather station.

Below is my Savage 17HMR, which has a Vortex Viper 3-9X40mm. Siiri also shoots a Savage 17HMR.

And this is my new Savage model 12 chambered in .204 Ruger. This has a Vortex Viper 6.5-20X50 on Burris extreme tactical rings, with a Ken Farrell 20 MOA base. The rings I bought ended up being way too high. I didn’t realize how tall a Farrell base was. I ordered rings that are 1/2″ lower. So for now I used rubber bands and a towel to make the stock taller. Very high-tech, as you can see:

Savage Shines with Factory .204 Ammo
Today ended up being a very good day. I decided to try shooting at 200 yards to see how my .204 would group. I ended up shocking myself — I shot a 0.231″, 3-shot group. (0.435-0.204=0.231″). That is with Hornady 32gr factory ammo. Can’t complain with those results! I think we are going shooting again soon. But the weather is supposed to be -10° C so it’s not going to be as nice. But I made a gong and I need to try it out. I’m also going to test some loads in the model 12.