Remington Magnum

The .222 Remington Magnum was originally developed as an experimental military cartridge in a cooperative effort between Remington and Springfield Armory for use in light combat rifles. This cartridge is basically a lengthened .222 Remington. This gives it approximately a 20% greater case capacity and another 100 yards of effective range.

As a military cartridge, the .222 Remington Magnum eventually evolved into the 5.56x45 mm. The commercial version of the new military round is the .223 Remington.

The initial popularity of the .222 Magnum faded rapidly with the arrival of the .223.

The SAAMI Maximum Average Pressure for the .222 Remington Magnum is 50,000 C.U.P. Although this data was developed in P.S.I., it does not exceed the corresponding SAAMI limits.

.222 REMINGTON MAGNUM

Gun

DOUGLAS

Max Length

1.850"

Barrel Length

24"

Trim Length

1.830"

Primer

REM 7°

OAL Max

2.280"

Case

REM

OAL Min

2.220"

START LOADS

MAXIMUM LOADS

Cartridge

Bullet

Powder

Grains

Vel.

Powder

Grains

Vel.

P.S.I.

Length Comment

NOS 40 BT

2015

23.9

3194

2015

26.5

3630

48,500

2.345"

2230

25.6

3195

2230

28.5

3631

46,900

2460

26.1

3219

2460

29.0

3659

44,400

Compressed

2520

26.1

3075

2520

29.0

3495

36,600

Compressed

2700

26.1

2848

2700

29.0

3237

32,300

Compressed

NOS 45 'Hornet"

2015

24.3

3098

2015

27.0

3521

47,200

2.220" *

2230

25.8

3122

2230

28.7

3548

47,500

2460

26.4

3150

2460

29.3

3579

49,400

2520

26.1

3057

2520

29.0

3474

43,900

2700

27.6

2922

2700

29.0

3109

33,900

SPR 50 HP

2015

23.9

2991

2015

26.5

3399

49,100

2.320" *

2230

25.4

3047

2230

28.2

3462

51,700

2460

25.5

3032

2460

28.3

3445

50,600

2520

26.1

2994

2520

29.0

3402

46,900

2700

27.6

2854

2700

29.0

3036

35,900

START LOADS

MAXIMUM LOADS

Cartridge

Bullet

Powder

Grains

Vel.

Powder

Grains

Vel.

P.S.I.

Length Comment

NOS 52 HP

2015

23.2

2942

2015

25.8

3343

49,900

2.295" *

2230

24.9

2981

2230

27.7

3388

52,400

2460

25.5

2982

2460

28.3

3389

50,000

2520

26.1

2673

2520

29.0

3037

45,400

2700

27.6

2773

2700

29.0

2950

35,200

NOS 55 SBT

2015

23.0

2833

2015

25.5

3219

47,200

2.310" *

2230

24.3

2861

2230

27.0

3251

49,200

2460

24.9

2896

2460

27.7

3291

50,900

2520

25.8

2884

2520

28.7

3277

46,800

2700

27.6

2774

2700

29.0

2951

36,700

NOS 60 SP

2015

22.1

2716

2015

24.5

3086

48,800

2.330" *

2230

23.4

2717

2230

26.0

3088

49,300

2460

24.0

2752

2460

26.7

3127

49,100

2520

24.9

2772

2520

27.7

3150

48,800

2700

26.6

2668

2700

28.0

2838

37,700

SRA 63 SP

2015

22.3

2700

2015

24.8

3068

50,300

2.280"

2230

22.5

2606

2230

25.0

2961

48,700

2460

23.0

2644

2460

25.5

3005

47,000

2520

24.3

2646

2520

27.0

3007

45,600

2700

25.2

2452

2700

28.0

2786

38,600

* Over SAAMI Maximum OAL

* Over SAAMI Maximum OAL

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