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We’d been caught. Anse, my 5-year-old son, and I had heard hickory nut cuttings raining from the canopy on the next ridge, and we were trying to hustle into range. But moving quietly across dry leaves with a hyperactive little boy in tow is tough.
We had to cross a four-wheeler path that momentarily put us in the open, and that was when the barking started. I slowly sat down and stared through the late-August foliage. I caught a glimpse of the flashing tail. Dialing up my scope’s magnification, I could see the squirrel’s black eye and ears—and that was enough to shoot at. We were 80 yards away, give or take. I rested the heavy fore end of the .17 across my knee, and told Anse to cover his ears. At the report, the squirrel slumped on the trunk for a second, and then fell to the ground—a sure sign of a perfect headshot.
“Daddy, you blistered that one!” he said.
That’s right, Son… And maybe we could’ve killed another one, had we sat tight, but Anse was already burning a trail through the woods to retrieve it.
That shot would’ve been a problem with the squirrel gun I’ve mostly carried for the past 24 seasons. It’s a Marlin 880 SS .22 LR with a fixed 4-power Tasco scope. It’s a simple setup, and though I could not tell you how many thousands of squirrels I’ve killed with it, an 80-yard headshot is beyond its capability. Or at least, beyond my capability with it.
The CZ 457 Varmint in .17 HMR and 10X scope that I was shooting, on the other hand, did the job it just fine. It’s a fancier, more expensive gun that fires a fancier, more expensive cartridge—but that shot made my boy look at me like a hero, and that’s worth a hell of a lot. And if I’m being honest, I’ve enjoyed hunting with the setup so much that I’ve been in the squirrel woods more often this season.
Why Choose a Magnum Rimfire Cartridge for Hunting Squirrels
As popular cartridges go, Hornady made waves when they introduced the .17 HMR in 2002. It’s flat shooting, with a reputation for outstanding accuracy. Varmint shooters loved it from the get-go, but squirrel hunters mostly steered clear because the standard load—a 17-grain ballistic tip at nearly 2,600 fps—pulverizes too much meat.
The .22 WMR has some of the same destructive issues (I’d argue that a 40-grain hollowpoint from the magnum is more vicious than the .17 ballistic tip). But it’s historically had a reputation for inaccuracy, too, and that’s an even bigger problem. Even if that reputation has been overblown (I’d say it has, a little), squirrel hunters won’t abide even a rumor of it. That and economy—squirrel hunting loses a lot of appeal when it gets expensive—is why the .22 LR hollowpoint has long held its standing as the king of squirrel loads.
But rimfire rifles—including affordable ones in magnum calibers—have gotten much better in the past decade. There are now numerous sub-$600 guns with free-floating barrels and adjustable triggers. As much as that, ammo has gotten better, with several game-friendly bullets available in both .17 HMR and .22 WMR.
Still, why would you want a magnum rimfire for squirrel hunting if your regular .22 is working just fine? The flat trajectory advantage is huge. In mature timber, especially later in the season, when squirrels are foraging on the ground, shot opportunities can be surprisingly rangy. A 100-yard poke isn’t uncommon, and 50-yard shots are about average. When you’re talking a target the size of a squirrel’s head, a quarter inch-worth of bullet drop or rise is huge.
To that end, a .17 HMR sighted in at 100 yards with 20-grain bullets will be .4 inch low at 20, and .4 inch high at 75. You can hold on a squirrel’s eyeball at virtually any distance you’re likely to see them in the woods and make a clean head-shot. A .22 WMR with 40-grain bullets will do the same thing at 75 yards.
By comparison, a hyper-velocity Long Rifle hollowpoint that’s sighted in .3 inch high at 25 yards will be nearly an inch high at 50, and 2.5 inches low at 100. Such a lobbing arc works if you’re body-shooting squirrels, but only unwashed heathens do things like that. You could put a high-end scope with adjustable turrets on your .22 and carry a rangefinder to dope for the drop—but if you do that, you’re inflating your small-game budget again. And besides, who wants to mess with all that gear? Squirrel hunting is supposed to be simple.
Magnum Game Loads
You need to choose your bullets carefully if you’re hunting with a magnum rimfire because every great once in a while, you’ll miss the head and hit the body. You don’t want to render the entire critter inedible. My favorite bullet—in both calibers—is the CCI Gamepoint, which is a 20-grain pointed soft point in the .17, and a 40-grain PSP in .22 mag. Hornady makes a similar .17 20-grain soft point in the HP Varmint. CCI also makes a 20-grain Full Metal Jacket .17 HMR, which I haven’t tried, and Winchester makes a 40-grain FMJ in .22 WMR, which I have. It’s a fine squirrel load, if you can find it and your gun shoots it.
The Best Magnum Rimfires for Squirrel Hunting
CZ 457 Varmint .17 HMR
Ruger American .22 WMR
Savage B22 Magnum FVSS
Tikka T1x MTR .17 HMR
What About the .17 Mach 2?
The .17 HM2, or Mach 2, was introduced a couple years after the .17 HMR, but it never caught on in the same way that the more powerful cartridge did. The Mach 2 is a .22 LR Stinger case necked down to accept a .17 bullet. It’s seen a bit of a resurgence—CCI introduced a new VNT Mach 2 load last year—and its most loyal following is among serious squirrel hunters.
By: Will Brantley - Field & Stream