Rifle Caliber Comparison: How to Choose the Right Cartridge
Choosing the right rifle caliber is one of the most debated topics in the firearms world. Each cartridge represents a set of engineering tradeoffs — velocity vs. recoil, energy vs. ammunition cost, flat trajectory vs. barrel life. This guide cuts through the noise with data and practical recommendations.
By Dwight Ringdahl — GunExpos.com
How to Think About Caliber Selection
Every caliber decision comes down to four factors:
- Purpose — What are you doing? Target shooting, hunting, home defense, or competition
- Game size (if hunting) — Varmints, deer-sized, elk-sized, or dangerous game
- Effective range — How far do you realistically need to shoot?
- Recoil tolerance — How much kick can you comfortably handle for extended practice sessions?
The Most Popular Rifle Calibers
.22 Long Rifle (.22 LR)
Type: Rimfire | Bullet weight: 36–40 grains | Muzzle velocity: 1,050–1,250 fps | Effective range: 75–100 yards | Recoil: Essentially zero | Cost per round: $0.05–$0.10
Best for: Training, plinking, small game (squirrel, rabbit), youth shooters. Every gun owner should have a .22 LR for practice. It's the cheapest way to build marksmanship fundamentals — you can shoot 500 rounds for under $30, which is impossible with any centerfire cartridge. The Ruger 10/22 is the gold standard platform.
.223 Remington / 5.56x45mm NATO
Bullet weight: 55–77 grains | Muzzle velocity: 2,900–3,200 fps | Effective range: 300–500 yards | Recoil: Very low | Cost per round: $0.30–$0.50
Best for: AR-15 platform, varmint hunting, home defense, competition (3-gun). The standard AR-15 caliber offering flat trajectory, low recoil, and affordable ammunition. Note that .223 Remington and 5.56 NATO are similar but not identical — 5.56 is loaded to higher pressures. A 5.56 chamber safely fires both; a .223-only chamber should only fire .223. Not legal for deer hunting in some states due to minimum caliber requirements — check local regulations before hunting season.
6.5 Creedmoor
Bullet weight: 120–147 grains | Muzzle velocity: 2,650–2,900 fps | Effective range: 800–1,200 yards | Recoil: Low-moderate | Cost per round: $0.80–$1.50
Best for: Precision rifle competition, long-range target shooting, deer hunting. The 6.5 Creedmoor took the shooting world by storm with its exceptional long-range performance and mild recoil. Its high ballistic coefficient bullets resist wind deflection and maintain velocity far better than competing cartridges at the same recoil level. Arguably the best all-around precision cartridge available today, it has rapidly displaced .308 Win in competition circles.
.308 Winchester / 7.62x51mm NATO
Bullet weight: 147–180 grains | Muzzle velocity: 2,600–2,800 fps | Effective range: 600–800 yards | Recoil: Moderate | Cost per round: $0.60–$1.00
Best for: Hunting (deer, elk at closer range), precision rifle, military and law enforcement sniper platforms, battle rifle platforms (AR-10, M1A, FAL). The .308 has been America's workhorse rifle cartridge since the 1950s. It does everything well — hunting, precision, tactical. More recoil than 6.5 Creedmoor with similar or slightly less effective range at long distance, but it hits harder on game at closer distances and ammunition is available literally everywhere.
.30-06 Springfield
Bullet weight: 150–220 grains | Muzzle velocity: 2,500–2,900 fps | Effective range: 500–800 yards | Recoil: Moderate-heavy | Cost per round: $0.80–$1.50
Best for: Hunting all North American game from whitetail to moose. The .30-06 has been the American hunter's cartridge since World War I. With appropriate bullet selection (150gr for deer, 180gr for elk, 200–220gr for moose and bear), it can handle anything on the continent. More recoil than .308 but marginally more velocity with heavier bullets. If your grandfather hunted, he probably used a .30-06.
.270 Winchester
Bullet weight: 130–150 grains | Muzzle velocity: 2,900–3,100 fps | Effective range: 400–600 yards | Recoil: Moderate | Cost per round: $0.80–$1.50
Best for: Deer and antelope hunting in open country. The legendary outdoor writer Jack O'Connor made the .270 famous, and it remains one of the best deer and antelope cartridges ever designed. Flat-shooting trajectory, moderate recoil, and excellent terminal performance on medium game. A devoted following keeps ammunition widely available.
7.62x39mm
Bullet weight: 122–154 grains | Muzzle velocity: 2,300–2,400 fps | Effective range: 200–300 yards | Recoil: Moderate | Cost per round: $0.25–$0.40
Best for: AK-47 and SKS platforms, affordable centerfire shooting, deer hunting at moderate range. The Soviet-era intermediate cartridge is affordable and widely available thanks to decades of military surplus production. Not a long-range cartridge by any measure, but entirely effective at typical hunting and defensive distances under 200 yards. The cheapest centerfire rifle cartridge on the market after .223.
.300 Winchester Magnum
Bullet weight: 150–220 grains | Muzzle velocity: 2,900–3,200 fps | Effective range: 800–1,200 yards | Recoil: Heavy | Cost per round: $1.50–$3.00
Best for: Long-range hunting of elk and large game, military long-range precision. The .300 Win Mag hits hard at extreme range and is the standard recommendation for elk at 300+ yards and moose-sized game. Significant recoil limits its appeal for extended practice sessions or recoil-sensitive shooters. Not a good choice for a first rifle.
.243 Winchester
Bullet weight: 55–105 grains | Muzzle velocity: 2,900–3,400 fps | Effective range: 300–500 yards | Recoil: Low | Cost per round: $0.80–$1.50
Best for: Youth hunters, women wanting low recoil, deer (in states that allow it), varmint hunting. The .243 is the classic "first deer rifle" caliber — minimal recoil with adequate performance on deer-sized game at reasonable distances. Some states have minimum caliber requirements that exclude the .243, so check local regulations before purchasing for hunting.
Master Comparison Table
| Caliber | Recoil | Cost/Round | Effective Range | Best For |
|---|---|---|---|---|
| .22 LR | None | $0.05 | 100 yds | Training, plinking |
| .223/5.56 | Very Low | $0.35 | 400 yds | AR-15, varmint, defense |
| .243 Win | Low | $1.00 | 400 yds | Youth, deer, varmint |
| 6.5 Creedmoor | Low-Med | $1.00 | 1,000 yds | Precision, deer |
| 7.62x39 | Moderate | $0.30 | 250 yds | AK/SKS, budget shooting |
| .270 Win | Moderate | $1.00 | 500 yds | Deer, antelope |
| .308 Win | Moderate | $0.80 | 700 yds | Hunting, precision |
| .30-06 | Med-Heavy | $1.00 | 700 yds | All-game hunting |
| .300 Win Mag | Heavy | $2.00 | 1,000 yds | Elk, long-range |
How to Choose: Decision Guide
For Training and Fun
Get a .22 LR. Nothing else comes close for cost-effective practice. Shoot 500 rounds for the cost of 50 rounds of centerfire. Build your fundamentals here before stepping up.
For an AR-15
.223 Remington / 5.56 NATO is the standard and the obvious choice. If you want a larger-caliber AR platform, consider .308 Winchester (AR-10 platform) or 6.5 Creedmoor for long-range precision.
For Deer Hunting
- Under 200 yards: Almost any caliber works. .308 Win, .30-06, .270, even 7.62x39mm
- 200–400 yards: 6.5 Creedmoor, .270 Winchester, .308 Winchester
- 400+ yards: 6.5 Creedmoor, .300 Winchester Magnum
For Elk and Large Game
.308 Winchester works under 300 yards. Step up to .30-06 Springfield or .300 Winchester Magnum for longer shots or the confidence of extra energy on large-bodied animals.
For Precision and Long Range Competition
6.5 Creedmoor is the current king, having dethroned .308 Winchester in most competition circles. The .308 remains the classic choice and is still competitive at distances under 800 yards.
For Budget Centerfire Shooting
7.62x39mm and .223/5.56 NATO offer the lowest cost per round in centerfire ammunition, making them ideal for high-volume practice.
Ammunition Availability
One often-overlooked factor is ammunition availability during shortages. During the 2020–2022 ammunition crisis, common calibers like 9mm and .223 were scarce, but less popular calibers were even harder to find. Calibers with military and law enforcement demand (.223, .308, 9mm) tend to recover fastest because manufacturers prioritize those production lines.
Stock up during periods of normal availability. See our bulk ammo buying guide for strategies.
Where to Buy
Find rifles in every caliber at your next gun show — you can handle and compare options side by side. Browse our dealer directory for local shops with knowledgeable staff who can help match the right caliber to your needs. For online purchases, see our guide to buying guns online.