42 WINCHESTER AMMO101
AMMUNITION ACADEMY
AMMO101 | RIMFIRE
AMMO101 | CENTERFIRE RIFLE
HOW IT WORKS 1 As the trigger is pulled, the firing pin strikes and crushes the cartridge rim to ignite the primer. 2 Gas converted from the burning powder rapidly expands in the cartridge, forcing the bullet out of the cartridge and down the barrel. 3 The rifling in the barrel causes the bullet to spin as it exits the barrel and travels downrange.
HOW IT WORKS 1 As the trigger is pulled, the primer is struck, creating a mini explosion, that ignites the powder. 2 Gas generated from the burning powder rapidly expands in the cartridge, forcing the bullet out of the cartridge and down the barrel. 3 The rifling in the barrel causes the bullet to spin as it exits the barrel and travels downrange.
A soft point bullet after impact. Notice the petals that form upon expansion.
THE BULLET Designed with specific performance in mind, different bullets can produce varying degrees of expansion, penetration and accuracy. Modern bullets are typically a lead core with a ‘jacket’ around them made of a harder material like copper or copper alloy to reduce barrel fouling. Centerfire rifle bullets are designed to travel farther downrange than other ammunition, so the shape and tip of the bullet play a large role in accuracy at long range.
THE BULLET Designed with specific performance in mind, different bullets can produce varying degrees of expansion, penetration and accuracy.
THE POWDER Smokeless powder is a type of propellant that burns cleaner and more consistently, resulting in less fouling in the barrel.
THE SHELLCASE The shellcase holds all the components together and is most commonly made of brass or steel.
DISTANCE (YARDS)
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125
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THE SHELLCASE The shellcase holds all the components together and is made of brass.
THE POWDER Smokeless powder is a type of propellant that burns cleaner and more consistently, resulting in less fouling in the barrel.
DISTANCE (YARDS)
As the bullet travels downrange, forces like gravity, wind and precipitation have an effect on the bullet. Gravity in particular causes the bullet to “drop” the farther it travels downrange.
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100
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250
-2 -3 DROP (INCHES)
0 -1
As the bullet travels downrange, forces like gravity, wind and precipitation have an effect on the bullet. Gravity in particular causes the bullet to “drop” the farther it travels downrange.
-2 -3 DROP (INCHES)
THE PRIMER The primer is responsible for igniting the powder - a high quality primer ensures reliability and consistency shot after shot.
THE PRIMER The primer is responsible for igniting the powder- a high quality primer ensures reliability and consistency shot after shot.
BULLET TYPES
COMMON USES
Soft Point High Expansion, Optimal Penetration
COMMON USES
TARGET SHOOTING High-volume recreational shooting known as “plinking” provides rimfire shooters of all experience levels hours of enjoyment and practice without much recoil or noise. HUNTING Hunting with rimfire ammunition is an excellent way to introduce new hunters to the outdoors. Small game like squirrel, rabbit and groundhogs offer lots of shot opportunities for young and new shooters.* PERSONAL DEFENSE Rimfire ammunition may not be everyone’s first choice for defensive purposes, but many shooters are more comfortable with the low recoil.
PERSONAL DEFENSE Increasingly, rifle owners are buying ammunition with special technology, specifically designed for personal defense. TARGET SHOOTING Long-range shooting competitions and outdoor ranges allow the shooter hours of enjoyment and challenging practice. HUNTING One of the most commonly used ammunition types for hunting. Centerfire rifle offerings can accommodated virtually any type of hunting - from small game and varmint to the largest big-game species in the world.*
Polymer Tip Excellent Expansion, Highly Accurate BULLET TYPES
Polymer Tip High Expansion, Highly Accurate
Lead Round Nose Good Expansion, Average Penetration
Full Metal Jacket (FMJ) Little Expansion, Highly Accurate
*Always consult your local hunting regulations before going afield.
*Always consult your local hunting regulations before going afield.
CALIBERS Centerfire rifle calibers are determined by the inside diameter of the barrel they’re shot from. These sizes range from as small as .222 to as large as .50 caliber. Popular cartridges are .223 Rem, .243 Win, .270 Win, 6.8 Western, 300 Win Mag and 350 Legend.*
Plated Hollow Point Good Expansion, Average Penetration
CALIBERS
*Cartridges are not shown in actual size and are displayed in order of muzzle energy, slowest to fastest Rimfire calibers are determined by the inside diameter of the barrel they’re shot from. Popular calibers include .17 and .22, common cartridges include 22 LR, 17 HMR, 22 Win Mag and the world’s fastest rimfire cartridge the 17 WSM.
.223 Rem .243 Win .270 Win 6.8 Western 300 Win Mag
350 Legend
.22 Long Rifle .17 HMR .22 Win Mag .17 WSM
*Cartridges are not shown in actual size
Ranges are staffed with skilled professionals and instructors who can offer new shooters advice on the basic skills and rules of safe gun handling. If you’re looking for a range, search our comprehensive directory to find a location near you. Winchester.com/ Where-to-Shoot
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