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Ammo Caliber Size Chart

Ammunition Caliber Size, Usage and Ballistics Guide

The following bullet caliber charts show a side-by-side size comparison between the most common rifle and handgun ammo catridges and the 50BMG. Details and specs for each bullet caliber include size, type, recoil primer and performance ballistics.

Caliber Size Details / Specs
22LR Caliber Bullet Caliber: .22LR
Bullet size: 30-40 grains
Type: Rimfire cartridge
Usage: Varmint < 50 lbs
Velocity: 1,200-1,640 ft/s (40-30 gr)
Energy: 131-191 ft⋅lbf (30-40 gr)
Recoil: Low
Bullet diameter: 0.223 in (5.7 mm) - 0.2255 in (5.73 mm)
Case length: .613 in (15.6 mm)
Overall length: 1.000 in (25.4 mm)
Primer type: Rimfire
22LR ammo
.22 WMR Bullet Caliber: .22 WMR
Bullet size: 30-50 grains
Type: Rimfire
Usage: Personal Defense
Velocity: 1,530-2,300 ft/s (50-30 gr)
Energy: 300-324 ft⋅lbf
Recoil: Low
Bullet diameter: .224 in (5.7 mm)
Case length: 1.055 in (26.8 mm)
Overall length: 1.350 in (34.3 mm)
Primer type: Rimfire
.22 WMR ammo
9mm Bullet Caliber: 9mm
Bullet size: 115-147 grains
Type: Pistol
Usage: Personal Defense
Velocity: 1,180-2,010 ft/s (115-60gr)
Energy: 355-501 ft⋅lbf (115-124gr)
Bullet diameter: 9.01 mm (0.355 in)
Case length: 19.15 mm (0.754 in)
Overall length: 29.69 mm (1.169 in)
Primer type: Berdan or Boxer small pistol
9mm ammo
10mm Bullet Caliber: 10mm Auto
Bullet size: 77-220 grains
Type: Pistol
Usage: Medium Game 50-300 lb; Personal Defense
Velocity: 1,290-2,420 ft/s (180-77 gr)
Energy: 649-1,001 ft⋅lbf
Bullet diameter: SAAMI: .4005 in (10.17 mm)
Case length: SAAMI: .992 in (25.2 mm)
Overall length: SAAMI: 1.260 in (32.0 mm)
Primer type: Large pistol
10mm ammo
.380 Auto Bullet Caliber: .380 ACP
Bullet size: 45-100 grains
Type: Pistol
Usage: Personal Defense
Velocity: 1,025-1,835 ft/s (100-45gr)
Energy:203-337 ft⋅lbf
Bullet diameter: .355 in (9.0 mm)
Case length: .680 in (17.3 mm)
Overall length: .984 in (25.0 mm)
.380 ammo
.40 S&W Bullet Caliber: .40 S&W
Bullet size: 105-200 grains
Type: Pistol
Usage: Personal Defense
Velocity: 1,050-1,130 ft/s (200-165 gr)
Energy: 468-490 ft⋅lbf (165-200 gr)
Bullet diameter: .400 in (10.2 mm)
Case length: .850 in (21.6 mm)
Overall length: 1.135 in (28.8 mm)
Primer type: Small pistol
40 S&W ammo
.45 ACP Bullet Caliber: .45 ACP
Bullet size: 68-300 grains
Type: Pistol
Usage: Personal Defense
Velocity: 835-2,036 ft/s (230-90 gr)
Energy: 356-829 ft⋅lbf
Bullet diameter: .450 in (11.4 mm)
Case length: .898 in (22.8 mm)
Overall length: 1.275 in (32.4 mm)
Primer type: Large
45 Auto (ACP) ammo
38 Special Bullet Caliber: .38 Special
Bullet size: 110-158 grains
Type: Revolver
Usage: Personal Defense
Velocity: 900-1,150 ft/s (147-100 gr)
Energy:264-333 ft⋅lbf
Bullet diameter: .357 in (9.1 mm)
Case length: 1.155 in (29.3 mm)
Overall length: 1.550 in (39.4 mm)
Primer type: Small pistol
38 Special ammo
.357 Magnum Bullet Caliber: .357 Magnum
Bullet size: 100-200 grains
Type: Handgun; Carbine
Usage: Varmint < 50 lbs; Medium Game 50-300 lbs; Personal Defense
Velocity: 1,080-1,450ft/s (180-125 gr)
Energy: 539-583 ft⋅lbf
Bullet diameter: .357 in (9.1 mm)
Case length: 1.29 in (33 mm)
Overall length: 1.59 in (40 mm)
Primer type: Small pistol magnum
.357 Magnum ammo
44 Magnum Bullet Caliber: 44 Magnum
Bullet size: 180-340 grains
Type: Handgun; Rifle
Usage: Medium Game 50-300 lbs; Large Game 300-1500 lbs; Personal Defense
Velocity: 1,180-1,475 ft/s (340-240 gr)
Energy: 741-1,533 ft⋅lbf
Bullet diameter: .429 in (10.9 mm)
Case length: 1.285 in (32.6 mm)
Overall length: 1.61 in (41 mm)
Primer type: Large Pistol
44 Magnum ammo
7.62x39 Bullet Caliber: 7.62x39mm
Bullet size: 120-125 grains
Type: Rifle
Usage: Personal Defense; Medium Game (50-300 lbs)
Velocity: 730-738 ft/s (122-154 gr)
Energy: 1,555-1,607 ft⋅lbf
Recoil: Low
Bullet diameter: 7.85–7.9 mm (0.309–0.311")
Case length: 38.70 mm (1.524 in)
Overall length: 56.00 mm (2.205 in)
Primer type:Boxer Large Rifle (brass); Berdan (steel case)
.223 Caliber Bullet Caliber: .223
Bullet size: 36-112 grains
Type: Rifle
Usage: Varmint < 50lbs; Personal Defense; Target/Match
Velocity: 2,750-3,750ft/s (77-36 gr)
Energy: 959-1,401 ft⋅lbf (36-77 gr)
Recoil: Low
Bullet diameter: 0.224 in (5.7 mm)
Case length: 1.76 in (45 mm)
Overall length: 2.26 in (57 mm)
Primer type: Small rifle
.223 ammo
.22-250 Remington Bullet Caliber: .22-250 Remington
Bullet size: 35-75 grains
Type: Rifle
Usage: Varmint < 50 lbs
Velocity: 3,500-4,224 ft/s (64-40 gr)
Energy: 1,585-1,751 ft⋅lbf
Recoil: Low
Bullet diameter: .224 in (5.7 mm)
Case length: 1.912 in (48.6 mm)
Overall length: 2.35 in (60 mm)
Primer type: Large rifle
.22-250 Remington ammo
.243 Winchester Bullet Caliber: .243 Winchester
Bullet size: 55-115 grains
Type: Rifle
Usage: Medium Game 50-300 lbs
Velocity: 2,960-3,925 ft/s (100-58 gr)
Energy: 1,873-1,994 ft⋅lbf
Recoil: Low
Bullet diameter: .243 in (6.2 mm)
Case length: 2.045 in (51.9 mm)
Overall length: 2.7098 in (68.83 mm)
Primer type: Large Rifle
.243 Winchester ammo
6.5 Creedmoor Bullet Caliber: 6.5mm Creedmoor
Bullet size: 120-150 grains
Type: Centerfire rifle
Usage: Medium Game 50-300 lbs; Large Game 300-1500 lbs; Personal Defense
Velocity: 2,710-3,020 ft/s (143-120 gr)
Energy: 2,283-2,430 ft⋅lbf
Recoil: Moderate
Bullet diameter: .2644 in (6.72 mm)
Case length: 1.920 in (48.8 mm)
Overall length: 2.825 in (71.8 mm)
Primer type: Large rifle, Small rifle
6.5 Creedmoor ammo
.308 Bullet Caliber: .308
Bullet size: 100-240 grains
Type: Rifle
Usage: Large Game (300-1500 lbs); Dangerous Game
Velocity: 2,510-3,100 ft/s (185-125 gr)
Energy: 2,588-2.668 ft⋅lbf
Recoil: Moderate
Bullet diameter: 0.308 in (7.8 mm)
Case length: 2.015 in (51.2 mm)
Overall length: 2.800 in (71.1 mm)
Primer type: Large rifle
308 ammo
.270 Winchester Caliber: .270 Winchester
Bullet size: 90-160 grains
Type: Rifle
Usage: Medium Game 50-300 lbs; Large Game 300-1500 lbs
Velocity: 2,850-3,603 ft/s (150-90 gr)
Energy: 2,595-2,705 ft⋅lbf
Recoil: Moderate
Bullet diameter: .277 in (7.0 mm)
Case length: 2.540 in (64.5 mm)
Overall length: 3.340 in (84.8 mm)
Primer type: Large rifle
.270 Winchester ammo
.30-06 cartridge Caliber: .30-06
Bullet size: 110-220 grains
Type: Rifle
Usage: Medium-Large Game (50-1500 lbs)
Velocity: 2,500-2,910 ft/s (150-220 gr)
Energy: 2,820-3,036 ft⋅lbf
Recoil: Moderate
Bullet diameter: 308 in (7.8 mm)
Case length: 2.494 in (63.3 mm)
Overall length: 3.34 in (85 mm)
Primer type: Large rifle
.30-06 ammo
300 Win Mag Caliber: .300 Win Mag
Bullet size: 110-250 grains
Type: Rifle, Large Game
Usage: Medium Game 50-300 lbs; Large Game 300-1500 lbs
Velocity: 2,875-3,300 ft/s (220-165 gr)
Energy: 3,990-4,038 ft⋅lbf
Recoil: Moderate-High
Bullet diameter: .308 in (7.8 mm)
Case length: 2.62 in (67 mm)
Overall length: 3.34 in (85 mm)
Primer type: Large Rifle Magnum
.300 Win Mag ammo
*Cartridge ballistics, usage and recoil taken from Sportsman's Warehouse rifle ballistics and rifle recoil tables.

Bullet Grain Weight

Bullet size may vary within a given cartidge, or a cartridge may have a standard bullet size. For example, .308 rifle bullet size varies from about 125 to over 185 grains. Bulllet size for the 9mm Luger cartidge varies from 60 to 160 grains. However, AR-15 ammo has a standard bullet size of 55 grains. Even when you purchase a standard .308 rifle, you still have the option of firing various sizes of bullets.

Impact of Bullet Weight on Shooting

Bullet weight impacts bullet performance. Bullet weight impacts trajectory, terminal ballistics, impact to target, and recoil. When determining what size of bullet to use, it's important to consider how you'll be using your firearm. If you're going to be target shooting at close range, your bullet weight really isn't going to be that important. A lighter, less expensive bullet should work just fine. However, if distance, accuracy and takedown are factors, then bullet weight matters.

A lighter bullet typically is faster than a heavier bullet. It often maintains a flatter trajectory as well. However, light weight bullets are much more susceptible to wind than heavier bullets. On a winding day, a lighter bullet may be blown off target far easier than a heavier bullet. When it comes to accuracy, bullet weight is only one of several factors to consider.

Bullet Weight vs Recoil

Recoil is a simple function of physics. For every action there is an equal and opposition reaction. It requires more energy to move a heavier bullet. Hence, a heavier bullet generally generates more recoil than a lighter bullet. However, there are many factors beyond bullet weight, such as firearm weight and cartidge load, that play into recoil. For target partice, lower bullet weights, that generate less recoil, are typically ideal.

Why Choose a Larger Cartidge and Heavier Bullet?

There are pros and cons to using a lighter weight bullet versus a heavier weight bullet. However, when energy at the target is a top priority, it makes sense to go with a larger cartridge and heavier bullet. Using a larger caliber cartridge with a heavier bullet provides better expansion, penetration and take down power for hunting and humanely taking down large game.

Heavier bullets are also ideal for self defense weapons where stopping power is essential -- and your first shot may be your only shot.

Disclaimer: Sportsman's Warehouse assumes no responsibility or liability for any errors or omissions of the information on this page. Although we strive to provide the most accurate information as we can the information contained in this page is provided on an "as is" basis with no guarantees of completeness, accuracy, usefulness or timeliness.