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Below is a list of rimfire cartridges ('RF), ordered by caliber, small to large. Rimfire ammunition is a type of metallic cartridge whose primer is located within a hollow circumferential rim protruding from the base of its casing. The most common rimfire cartridges are chambered for .17 caliber and .22 caliber. The bullet diameter for .17 ...
Aug 17, 2023 · Rimfire and centerfire are the two primary ignition systems for cartridges. Specifically, it refers to where the primer is located. For the most part these days, rimfire has fallen out of favor and centerfire has become the dominant form of cartridge design, and indeed for good reason. Despite this, plenty of rimfire cartridges are still ...
- In The Beginning…
- 22 Winchester Magnum Rimfire
- 22 WMR
- 17 Hornady Magnum Rimfire
- 17 HMR
- 17 Winchester Super Magnum
- 17 WSM
- Availability & Pricing
- Conclusions
The .22 rimfire cartridge was born around 1845 when a Frenchman, Flobert, stuck a BB atop a then-new percussion cap and fired it. Yes, the primer alone provided the power, which wasn’t much, but adequate for indoor target shooting. In the US, Smith & Wesson extended Flobert’s idea with a stretched cap holding 4 grains of black powder. It pushed a 2...
In 1959 Winchester heeded the cry for a more powerful .22 rimfire by slightly lengthening its old (1890) .22 Winchester Rimfire (.22 WRF). The old WFR case was slightly wider and thicker than the Long Rifle case. This meant pressures could be slightly higher (25,600 psi) and bullets didn’t have to be heeled to fit inside the case mouth. This is why...
I chose this target diameter of 2 inches because it represents roughly the vtial zone of a small rodent or the head of a large one (woodchuck, jackrabbit). I established zero distance at 98 yards so that mid-range trajectory wouldn’t rise more than an inch above point-of-aim, which happens at about 60 yards. The bullet drops more than an inch below...
That brings us to the 17 Hornady Magnum Rimfire. This one, created by necking the .22 WMR down to hold a .172” bullet, was unleashed on an unsuspecting public in 2002. It was virtually an overnight success. Even though it shoots a sliver of a little bullet weighing just 17-grains, the sleek, pointy shape of those bullets — coupled with a launch spe...
Study the drop, windage (deflection) and energy columns here and you’ll see how the little .17 HMR bests the .22 WMR in some categories, but takes a back seat in others. It’s definitely a flatter shooter with a MPBR to about 170 yards. That gives it about a 50-yard advantage over the .22 WMR. Alas, at 170 yards, remaining bullet energy isn’t much. ...
Let’s end the suspense right now. Winchester’s newest rimfire blows both the .22 WMR and .17 HMR out of the race. In all categories except available rifles. Not many are chambered for it, more’s the pity. Because ballistically this is the world’s reigning rimfire champ. Before we look at the trajectory table, let’s dig into the .17 WSM’s genesis. T...
Here we see that MPBR extends to 180 yards, about a 65-yard improvement over the .22 WMR with the same 2-inch target. This means you could aim dead center on a 2-inch target from 10 yards out to 180 yards and hit it — given an accurate enough rifle and shooter. Wind deflection at 100 yards is more than 3 inches lessthan the .22 WMR’s and 1.6 inches...
Both the .22 WMR and .17 HMR are firmly established as standard rimfires. Most ammunition manufacturers load for both. Most rimfire rifle builders chamber for both. The .17 HMR loadings and/or rifles appear to be more consistently accurate. The .17 WSM is not as solidly established but, based on potential, certainly should be. Ammo costs per box of...
Selection among these fast rimfires comes down to your needs. As small game cartridges all are potentially too destructive. Even when limiting myself to head shots I sometimes lose front quarters on tree squirrels due to the explosive impact energy of a .17 HMR. But I love the reach and precision accuracy of this round. It’s one of my favorites for...
Apr 5, 2023 · Varmints. 398. .17 HMR. 0.172. Varmints. 240. For many of you, that’s what you’re looking for. You want to know how powerful each cartridge is. But if you’re also looking for a conversion of caliber in inches to mm, the following chart should have what you’re looking for.
Rimfire ammunition. A rim-fire (or rimfire) is a type of metallic cartridge used in firearms where the primer is located within a hollow circumferential rim protruding from the base of its casing. When fired, the gun's firing pin will strike and crush the rim against the edge of the barrel breech, sparking the primer compound within the rim ...
Feb 19, 2024 · Rimfire cartridges are a type of ammunition that have the priming compound located within the rim of the casing. When the firing pin strikes the rim, the pressure ignites the primer and fires the bullet. 1. How are rimfire cartridges different from centerfire cartridges?
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Rimfire Ammunition Ballistics Table. NOTE: Caliber is given in decimal fractions of an inch. Bullet Weight is given in grains. Muzzle Velocity (MV) and velocity at 100 yards (V@100) are given in feet-per-second. Muzzle Energy (ME) and energy at 100 yards (E@100) are given in foot-pounds. "MP" is the abbreviation used for momentum at the muzzle.
