Remington

In 1964 the .223 Remington was adopted as the 5.56mm Ball Cartridge M193, the new U.S. Military rifle cartridge. The .223 Remington is the commercial version of the 5.56mm. Several variations in chamber dimensions, principally in the chamber throat, have occurred since the 5.56 cartridge was adopted, the latest version to accommodate the heavier SS109 projectile.

The data presented here was developed in a barrel chambered to commercial .223 Remington specifications and this data may be used in firearms with military specification chambers. SAAMI has cautioned that some 5.56 ammo will produce excessive pressures when fired in rifles chambered for the .223 Remington cartridge.

Adoption as a U.S. military cartridge virtually guarantees commercial acceptance due to the availability of surplus components. However, the .223 Remington is an excellent varmint cartridge on its own merits. The military cases may be substantially heavier than the commercial products, and loads using military brass should be reduced at least 10%.

In the arena of NRA High Power Rifle competition, and particularly in the Service Rifle category, more and more AR-15 rifles are being used. We have included data for the 69 and 80 grain bullets for those shooters.

The .223 Remington was derived from the .222 Remington Magnum and will chamber in firearms of that caliber. The danger of cartridge case rupture due to excessive head space is real, and owners of firearms chambered for both these cartridges are advised to exercise extreme caution.

The SAAMI Maximum Average Pressure for the .223 Remington is 52,000 C.U.P. or 55,000 PSI.

.223 REMINGTON

Gun

WILSON

Max Length

1.760"

Barrel Length

24"

Trim Length

1.740"

Primer

REM 71/2

OAL Max

2.260"

Case

REM

OAL Min

2.160"

START LOADS

MAXIMUM LOADS

Cartridge

Bullet

Powder Grains Vel.

Powder

Grains

Vel.

C.U.P.

Length

Comment

44 (L) RNGC

5744 -- --

5744

11.0

1978

14,800**

2.040"

LY 224438

52 (L) RNGC

5744 -- --

5744

12.0

2078

19,500**

2.045"

Lyman

HDY 35 VMAX

NOS 40 BT

NOS 45 SP

NOS 55 SPBT

HDY 60 SP

BRG 52 HP

HDY 53 HP 'Match'

START LOADS

MAXIMUM LOADS

Cartridge

Powder

Grains

Vel.

Powder

Grains

Vel.

C.U.P.

Length

Comment

1680

19.3

3235

1680

21.5

3677

51,100**

2.130"

5744

20.0

3234

5744

22.0

3675

52,900**

2015

23.4

3356

2015

26.0

3814

52,400**

2230

26.5

3471

2230

29.5

3945

47,300**

5744

19.3

3087

5744

21.5

3509

54,000**

2.260"

1680

20.2

3199

1680

22.5

3636

49,000

2015

23.8

3296

2015

26.5

3746

51,900

2230

24.7

3202

2230

27.5

3639

50,800

2460

25.2

3234

2460

28.0

3675

51,000

2495

23.8

3089

2495

26.5

3511

44,400

Compressed

2520

25.6

3106

2520

28.5

3530

41,900

Compressed

1680

18.5

2906

1680

20.5

3302

48,200

2.115"

2015

23.4

3120

2015

26.0

3546

49,100

2230

24.3

3041

2230

27.0

3456

50,500

2460

24.8

3059

2460

27.5

3476

49,300

2495

23.9

3023

2495

26.5

3435

47,000

Compressed

2520

25.7

3013

2520

28.5

3424

42,000

Compressed

5744

18.5

2799

5744

20.5

3181

52,200**

2.235"

1680

18.5

2768

1680

20.5

3146

47,900

2015

23.0

2981

2015

25.5

3387

46,400

2230

23.4

2941

2230

26.0

3342

49,800

2460

23.4

2930

2460

26.0

3329

47,100

2495

23.9

2888

2495

26.5

3282

44,400

Compressed

2520

25.7

2944

2520

28.5

3346

42,200

Compressed

2015

21.2

2913

2015

23.6

3311

54,500**

2.250"

2230

22.0

2951

2230

24.5

3354

55,000**

2460

22.8

2933

2460

25.3

3334

55,000**

2520

25.2

2960

2520

28.0

3364

50,000**

Compressed

5744

17.5

2680

5744

19.5

3046

53,100**

2.225"

1680

18.0

2681

1680

20.0

3047

49,600

2015

22.1

2876

2015

24.5

3268

47,800

2230

23.4

2862

2230

26.0

3252

49,900

2460

23.0

2846

2460

25.5

3234

47,300

2495

23.4

2874

2495

26.0

3266

48,800

Compressed

2520

24.8

2847

2520

27.5

3235

43,200

Compressed

5744

17.5

2665

5744

19.5

3029

54,300**

2.230"

1680

18.5

2691

1680

20.5

3058

50,000

2015

22.5

2887

2015

25.0

3281

49,800

2230

23.4

2830

2230

26.0

3216

50,300

2460

23.9

2843

2460

26.5

3231

49,200

2495

23.6

2878

2495

26.2

3271

51,100

Compressed

2520

24.8

2837

2520

27.5

3224

43,300

Compressed

2015

21.6

2752

2015

24.0

3127

49,100

2.235"

2230

22.1

2717

2230

24.5

3087

49,200

2460

22.7

2706

2460

25.2

3075

49,400

2495

22.2

2680

2495

24.7

3046

46,300

100% Density

2520

24.8

2776

2520

27.5

3154

45,600

START LOADS

MAXIMUM LOADS

Cartridge

Bullet

Powder

Grains

Vel.

Powder

Grains

Vel.

C.U.P.

Length Comment

BRG 62 HP

2015

20.2

2668

2015

22.5

3032

55,000**

2.250"

2230

21.3

2677

2230

23.7

3043

54,600**

2460

21.9

2691

2460

24.3

3058

55,000**

2520

23.4

2728

2520

26.0

3101

55,000**

Full Case

BRG 64 HP

2015

19.8

2616

2015

22.0

2973

55,000**

2.250"

2230

21.1

2618

2230

23.4

2976

54,300**

2460

21.6

2624

2460

24.0

2982

53,100**

2520

23.4

2709

2520

26.0

3079

55,000**

Full Case

SRA 69 HPBT

2015

20.7

2567

2015

23.0

2917

48,400

2.250"

2230

22.1

2578

2230

24.5

2929

51,300

2460

22.2

2632

2460

24.7

2991

51,800

2495

22.5

2608

2495

25.0

2964

49,800

2520

24.3

2679

2520

27.0

3044

48,200

BRG 70 VLD

2015

18.9

2522

2015

21.0

2867

54,200**

2.250"

2230

20.9

2539

2230

23.2

2886

54,700**

2460

22.0

2578

2460

24.5

2930

54,900**

2520

23.4

2596

2520

26.0

2951

53,200**

Full Case

HDY 75 HPBT

2015

19.3

2438

2015

21.5

2771

51,800

2.255"

2230

21.6

2503

2230

24.0

2845

50,800

2460

22.0

2507

2460

24.5

2849

49,700

2520

22.9

2573

2520

25.5

2924

51,800

SRA 80 HPBT

2015

19.8

2382

2015

22.0

2707

49,000

2.450" *

2230

21.2

2424

2230

23.5

2754

49,100

2460

21.6

2453

2460

24.0

2788

49,500

2495

21.2

2453

2495

23.5

2788

51,600

2520

22.5

2460

2520

25.0

2796

49,700

BRG 80 VLD

2015

18.7

2317

2015

20.8

2633

54,400**

2.340"

2230

20.2

2342

2230

22.5

2662

54,600**

2460

20.7

2336

2460

23.0

2655

53,600**

2520

22.3

2412

2520

24.8

2741

55,000**

Subsonic Loads***

IMI 55 FMJ

S1250

--

--

S1250

3.5

1139

13,500**

2.230"

HDY 60 SP

S1250

--

--

S1250

4.2

1111

19,100**

2.235"

HDY 75 HPBT

S1250

--

--

S1250

4.5

1052

22,100**

2.255"

* Over SAAMI Maximum OAL

*** Subsonic loads will not operate M-16 or AR-15 rifles.

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