Rimfire

WBR – Rifle Type Categories Rimfire
Introduction
Since its introduction in 1887, the rimfire .22 Long Rifle cartridge has become the most widespread type of ammunition used all over the world.
Are you new to shooting or looking to teach your child the art of precision and accuracy? Then a rimfire rifle or handgun is your best option.

Defining a Rimfire rifle
Rimfire ammunition is a type of metallic cartridge used in firearms that has a primer housed within a hollow circumferential rim that protrudes from the base of its case.
When the gun is shot, the firing pin will strike and crush the rim against the edge of the barrel breech. This will cause a spark to travel through the primer compound that is contained within the rim, which will then ignite the propellant that is contained within the case.
The rim of such a cartridge is fundamentally an inflated and flattened end part of the case. The priming compound is loaded from the interior of the cartridge into the trough cavity that is located within the rim. The projectile is then used to close off the casing once it has been loaded with powdered propellant (bullet).
In order for the firing pin to be able to crush the rim of the cartridge and ignite the primer, rimfire cartridges can only operate at low pressures. This is because the case must be sufficiently thin. Cartridges for modern rimfire firearms typically have a caliber of .22 inches (5.5 millimeters) or less and contain smokeless powder, which generates far higher pressures than traditional powder.
This also means that rimfire firearms can be very light and inexpensive, as the production cost of the case material and powder load are both low, and the manufacturing process is significantly more streamlined than that of centerfire cartridges.

The History of Rimfire Rifles
The first rimfire metallic cartridge was the .22 BB Cap (also known as the 6mm Flobert) cartridge, which was invented in 1845 by Louis-Nicolas Flobert. This cartridge consisted of a percussion cap with a bullet connected to the top of it. Since the 19th century, numerous various approaches to priming a cartridge have been tested, but only rimfire and later centerfire cartridges have made it to the present day and are used routinely.
The .22 BB Cap and the slightly more powerful .22 CB Cap (introduced in 1888) are both known as 6mm Flobert in Europe and are considered the same cartridge.
In the mid-nineteenth century, 6mm Flobert Parlor pistols became popular, with heavy barrels. Benjamin Houllier improved on this cartridge in 1846.
During the American Civil War, larger rimfire calibers were used in the Henry repeating rifle, the Spencer repeating rifle, the Ballard Rifle, and the Frank Wesson carbine. While larger rimfire calibers such as the .30 rimfire, .32 rimfire, and .38 rimfire were produced. The larger calibers were quickly replaced by centerfire versions, and today the .22 caliber rimfires are all that remain of these early rimfire cartridges.
The popularity of .17 caliber (4.5 mm) rimfire cartridges has increased in the early twenty-first century.
The 17 HMR is a new and popular cartridge that is based on a.22 WMR casing with a smaller formed neck that accepts a .17 bullet. While .17 HM2 ammunition is roughly four times the price of .22 Long Rifle ammunition, it is still significantly less expensive than most centerfire ammunition and slightly less expensive than .17 HMR ammunition.
The .17 WSM, which was first shown at the 2013 SHOT Show, uses the blank case from a .27 nail-gun necked down to accommodate a .17 caliber bullet, resulting in significantly higher muzzle velocity and energy than the .17 HMR.

Pros & Cons of Rimfire Rifles
Advantages of Rimfire Ammunition
Rimfire ammunition is significantly cheaper than centerfire ammunition due to the cost of manufacturing. A thin-walled cartridge with a flattened bottom is far more cost effective.
Rimfire ammunition is ideal for beginning marksmen. Because of the lower recoil experienced when firing, a smaller size firearm is ideal for training new shooters.
Disadvantages of Rimfire Ammunition
Rimfire Cartridges construction is limited to Small Calibers.
Rimfire cartridges are non-reloadable. Those who enjoy reloading their own ammunition will be disappointed with rimfire cartridges. Because the primer is at the bottom edge of the cartridge, reloading is not possible. It’s over once it’s fired.
Problems with Reliability – due to the manufacturing process, specifically when the primer is attached to the cartridge base. The base distribution is not always perfect.
Long-Distance Shooting – The longer the bullet has to travel, the more influence outside factors will have on accuracy.

Uses of Rimfire Ammunition
The rimfire caliber of choice is 22 WMR. On average, it is more accurate and a crowd-pleaser for grassland dog hunting, as well as caracal cats (african lynx), serval cats, black-backed jackals, long-quilled porcupines, springhares, and other small varmints.

Maintaining a Rimfire Rifle
After each trip to the rifle range or hunting grounds, thoroughly dry your rimfire rifle and wipe down the bolt and the exterior metal parts with a lightly oiled rag.
There are numerous opinions on how frequently you should clean your rifle’s bore, or the inside of the barrel. The short answer is that you should clean your firearm before the bore becomes so clogged that accuracy suffers.
Products & Tools To Maintain Your Rimfire Rifle
To truly clean a barrel, a few readily available tools and products are required:
A vise or gun cradle for a stable work surface and two free hands.
A coated cleaning rod that will not scratch the bore of the rifle.
Nylon or brass brushes.
A brass jag to hold and push cleaning patches through the barrel.
100% cotton or cotton blend cleaning patches.
Boring guide to keep the rod true and prevent cleaning products from dripping back.
Copper and powder solvent.
Gun oil

The Procedure to Clean Your Rimfire Rifle
Clean the extension tube with a brush and solvent-dampened felt or tissue.
Apply a dry felt to the cleaning rod adapter and pull it through the barrel to the muzzle in a smooth and steady motion.
Remove the dirty felt and draw the cleaning rod back.
Apply a new piece of felt to the cleaning rod adapter and wet it with cleaning oil.
Insert the wet felt into the barrel and slide it toward the muzzle using quick, forward strokes.
Remove the dirty felt and pull the cleaning rod through the barrel in reverse.
Repeat these steps until the felts are clean.
Apply gun oil to a new cleaning felt and apply it to the cleaning rod.
Insert the oil-soaked felt into the barrel and advance it toward the muzzle using short, forward strokes.
Remove the felt and pull the cleaning rod through the barrel in reverse order.
Remove the cleaning rod guide and use a dry cotton swab or tissue to clean the receiver action.
Clean the bolt with gun oil and a cloth. Apply a thin layer of gun oil on the bolt, the lock nuts, and the cam, but do not overdo it.
Insert the bolt into the receiver and then close the receiver. It is essential to close the bolt without experiencing any resistance.
Before using your rifle again, use a cleaning rod to drive a clean, dry felt all the way through the barrel to the muzzle.
Remove the dirty felt and pull the cleaning rod through the barrel in reverse.
Repeat the process until no traces of oil remain on the felt.

FAQs
What Does Rimfire Rifles Mean?
Rimfire rifles mean that the ammunition is a type whose primer is positioned within a hollow circumferential rim bulging from the base of its casing.
What Is The Difference Between a Rimfire and Centerfire Rifle?
The difference between a rimfire and centrefire rifle is that for the ammunition used for centrefire rifles, the primer is located in the center of the casing base while the primer of rimfire ammunition is contained in the rim of the ammunition casing.
For What Are Rimfire Rifles Good?
Rimfire rifles are good for use in small caliber rifles and pistols that are suitable for target practice or small game and varmint hunting.
What Caliber Can Rimfire Rifles Be?
Rimfire rifles can be different calibers. The most common rimfire cartridges include .22 caliber and .17 caliber.
Is Rimfire More Powerful Than Centerfire?
No, rimfire is not more powerful than centrefire. Centerfire rounds give you the bullet speed, power, and accuracy to take down the largest animals.
Can Any Rifle Shoot Rimfire?
No, not any rifle can shoot rimfire. The firing pin in rimfire rifles strikes the rim of the cartridge base to ignite a primer, while the firing pin strikes a center primer in centerfire rifles.

Showing the single result