#rimfire

The .22 Winchester Magnum Rimfire, commonly called .22 WMR, and the .22 Long Rifle, known as .22 LR, are both rimfire cartridges that share a similar bullet diameter but differ significantly in performance, design, and intended use. One of the most important differences begins with the case itself, as the .22 WMR uses a longer and wider case than the .22 LR, allowing it to hold more powder and generate higher velocities. This increased case capacity is a primary reason why the .22 WMR delivers substantially more energy than the .22 LR, making it better suited for tasks that require greater impact or extended range.

Another key difference lies in velocity and overall ballistic performance. The .22 LR typically fires bullets in the range of about 1,000 to 1,300 feet per second depending on the load, while the .22 WMR commonly pushes bullets between roughly 1,800 and 2,200 feet per second. This significant increase in speed gives the .22 WMR a flatter trajectory, which means it experiences less bullet drop over distance and is generally easier to aim accurately at longer ranges. Because of this, shooters often find that the .22 WMR performs more consistently past 100 yards, whereas the .22 LR is usually considered most effective within that distance.

Bullet design also plays a role in differentiating the two cartridges. While both cartridges use bullets of approximately .224 inches in diameter, .22 WMR ammunition often features more advanced bullet types such as jacketed hollow points or polymer-tipped projectiles. In contrast, .22 LR rounds are more commonly found in simple lead round nose or basic hollow point configurations. The use of jacketed bullets in .22 WMR helps improve penetration and expansion, especially when used for small game hunting or pest control. This difference in bullet construction contributes to the .22 WMR’s reputation as a more capable cartridge for hunting applications.

Recoil and report are additional factors that separate these two rounds. The .22 LR is known for its extremely low recoil and relatively quiet report, making it a popular choice for beginners, training, and casual shooting. The .22 WMR, while still mild compared to centerfire cartridges, produces noticeably more recoil and a louder muzzle blast. This increased noise and recoil are direct results of the higher velocity and greater powder charge, and they can influence shooter comfort depending on the application.

Cost and availability are also important considerations when comparing .22 WMR and .22 LR. The .22 LR is widely regarded as one of the most affordable and commonly available cartridges in the world, which contributes to its popularity for target shooting and high-volume practice. In contrast, .22 WMR ammunition is typically more expensive due to its more complex construction and higher performance capabilities. This cost difference often leads shooters to reserve .22 WMR for specific uses rather than routine plinking or training.

Firearm compatibility is another area where these cartridges differ. Although they share similar bullet diameters, .22 WMR cannot be safely fired in firearms chambered for .22 LR due to the larger case dimensions. Many firearms are specifically designed for one cartridge or the other, though some revolvers and rifles offer interchangeable cylinders or barrels to accommodate both. This distinction is important because it reinforces that these cartridges are not interchangeable despite their similar naming conventions.

In terms of practical use, the .22 LR excels in roles such as target shooting, training, and small game hunting at closer ranges. Its low recoil, low cost, and minimal noise make it ideal for these purposes. The .22 WMR, on the other hand, is often chosen for situations where more power and range are needed, such as hunting slightly larger small game or dealing with varmints at extended distances. Its higher velocity and improved terminal performance give it an advantage in those roles.

Overall, while both cartridges serve valuable purposes, the .22 WMR stands out as a more powerful and longer-range option, whereas the .22 LR remains unmatched in affordability, accessibility, and ease of use.

There’s no doubt that most all of us started out our dive into firearms as youngsters shooting various rimfire firearms. For me it was single action revolvers made by Ruger and Colt. I also had the opportunity as a kid to shoot some Marlin and Savage semi-automatic and lever action rimfire rifles. These of course are all very classic setups. Today my focus is a lot on more modernized firearms like the AR-15 and it’s seemingly endless number of variants. Now to put the AR-15 together with some rimfire flare… this is something that I feel everyone should have to help introduce new shooters to the AR-15 platform but also to just have a ton of fun with. Now there are a number of companies that produce proprietary AR-15 look alike rifles in .22 long rifle and those are just fine and dandy, but what if you want more? What if you want the ability to move things around just like you would with a standard AR-15? Well stick around and I’ll give you the details on how you can achieve just that.

Brownells carries pretty much everything you’ll need in order to embark on a project like this. At the heart of this build is the barrel and bolt carrier assembly. CMMG which is renowned for their rimfire conversion kits for the AR-15 also make a dedicated barrel assembly with a bolt carrier group that installs inside of a standard AR-15 upper receiver. No gas tube since it’s direct blowback and comes threaded 1/2x28 for common flash hiders or a whisper pickle (suppressor) which is my muzzle device of choice. The barrels can be had in different lengths but I chose the 4.5” length as I knew I wanted a short barrel and to tuck a can under the handguard. For the receiver I chose an Aero Precision upper receiver and one of their handguard systems. I run just a standard charging handle but you could use a variety of different charging handle if you would like. This upper receiver has been swapped around to a number of different lower setups over the years, but most currently I’ve been running it on a Spike’s Tactical Crusader lower receiver fitted with a Primary Weapon Systems Buffer tube, an SBA5 pistol brace from SB Tactical and of course a Geissele SSA-E X Bow trigger assembly. As for the suppressor, I’ve run my TacSol Cascade Ti in the past but these days I mainly run my Rugged Oculus modular rimfire can since it’s user serviceable. With a basic red dot, this thing will hit steel out at 50 yards with boring regularity.

This rimfire AR-15 build is probably one of the most fun you can have in a small package. Super quiet running the suppressor and appropriate subsonic ammo. Cheat code: use CCI Standard velocity target 40 gr ammo if you want to save a bit over anything labeled as “subsonic”. I regularly pick up bricks of this stuff from Brownells in addition to my other orders. This one is always a hit anything I bring it out to the range. People can shoot it as much as they want and it’s easy and cheap to do so.

It's Science she swears and not excuse to make out. Rimfire was definitely a willing volunteer. Do you think the experiment was a Success or Failure ?

The ultra-compact .22LR pistol category has always been dominated by small, easy-to-carry “mouseguns,” but the Beretta 20X Bobcat brings modern updates to a classic platform that has been trusted for decades. Whether used as a lightweight trail companion, backup pistol, or simple range toy, the 20X Bobcat offers shooters a unique blend of convenience, reliability, and timeless styling. Pairing the pistol with quality ammunition—such as CCI Standard Velocity .22LR from Brownells—can dramatically enhance the overall shooting experience.

Modernizing the Classic Bobcat

The Beretta Bobcat line has long been known for its tip-up barrel design, which allows shooters to load or unload the chamber without manipulating the slide. This feature is particularly useful for shooters with reduced hand strength or anyone who wants a safer, simpler way to chamber a round. The newer 20X Bobcat maintains this iconic functionality while adding modern improvements such as improved ergonomics, upgraded sights, and refined reliability enhancements.

Its compact size makes it extremely easy to carry or store in a range bag, tackle box, or vehicle kit. Despite its small footprint, the Bobcat remains comfortable to shoot thanks to its mild recoil and ergonomic grip shape. Many shooters appreciate that the pistol is equally suitable for casual plinking sessions, pest control duties, or as a discreet backup firearm.

Why CCI Standard Velocity .22LR Works So Well

A compact rimfire pistol can be sensitive to ammunition choice, which is why many shooters prefer CCI Standard Velocity 40-grain .22LR for consistent performance. This load is well known for offering dependable ignition, smooth feeding, and excellent accuracy compared to bulk rimfire ammunition. With a typical muzzle velocity around 1,070 feet per second, it sits right at the sweet spot between reliability and controllability. 

That moderate velocity produces several advantages. First, it reduces the sharp recoil impulse sometimes experienced with hotter high-velocity rounds, making the Bobcat easier to control for quick follow-up shots. Second, the standard-velocity profile often delivers better accuracy because it avoids the inconsistent transition between supersonic and subsonic flight. Finally, the load is known for relatively clean burning powder, which helps keep small rimfire pistols running longer between cleanings.

Many shooters also favor this ammunition when shooting suppressed (where legal), as standard-velocity rounds are often quieter than high-velocity alternatives. Although barrel length can affect whether the round remains fully subsonic, the 1,070 fps rating generally keeps sound signature manageable while still cycling semi-automatic actions reliably. Brownells typically has this in stock and I picked up a couple of bricks specifically for reviewing some rimfire pistols this year.

Real-World Shooting Impressions

When paired with CCI Standard Velocity ammunition, the Beretta 20X Bobcat demonstrates exactly what a pocket-size rimfire pistol should be: fun, reliable, and surprisingly accurate at realistic defensive or trail distances. Recoil is minimal, allowing extended range sessions without fatigue, and the lightweight pistol points naturally for quick target acquisition.

The combination also makes economic sense. Rimfire shooting remains one of the most affordable ways to practice fundamentals such as trigger control, sight alignment, and draw presentation. Reliable ammunition from established manufacturers—readily available through retailers like Brownells—helps ensure each range session is spent shooting rather than clearing malfunctions.

Final Thoughts

The Beretta 20X Bobcat continues to prove that small pistols can still deliver big performance when paired with the right ammunition. Its unique tip-up barrel design, compact dimensions, and refined modern upgrades make it one of the most practical rimfire pocket pistols currently available. Combined with dependable CCI Standard Velocity .22LR, shooters gain a reliable setup ideal for plinking, training, or lightweight carry needs.

For anyone looking to maximize reliability and consistency in a compact rimfire handgun, this pairing is a proven combination that offers excellent performance without breaking the bank—making the Beretta 20X Bobcat and CCI Standard Velocity ammunition a smart choice for both new shooters and experienced enthusiasts alike.