Winchester

Introduced by Winchester in 1963 in the Model 88 lever action and Model 100 semi-auto rifles, this is the first U.S. commercial cartridge with a rebated rim.

For a short time, Savage offered the Model 99 lever action chambered in .284 Winchester. The .284 was designed to equal the power of the longer .280 Remington cartridge and still work in a short action rifle.

The rebated rim is the same diameter as the .30-06, but the body diameter is nearly that of a belted magnum. Due to the relatively short overall length of this cartridge, heavier bullets encroach significantly into the powder space. This reduces the case capacity which lowers the performance potential of the cartridge and greatly increases the shot-to-shot variation of both pressure and velocity. This cartridge is best suited to bullet weights of150 grains or less, unless used in a rifle which permits longer seating of the bullets.

The SAAMI Maximum Average Pressure for the .284 Winchester is 56,000 P.S.I.

.284 WINCHESTER

Gun

DOUGLAS

Max Length

2.170"

Barrel Length

24"

Trim Length

2.150"

Primer

WLR

OAL Max

2.800"

Case

WW

OAL Min

2.765"

START LOADS

MAXIMUM LOADS

Cartridge

Bullet

Powder

Grains

Vel.

Powder

Grains

Vel.

P.S.I.

Length

Comment

HDY 100 HP

2700

48.0

2865

2700

50.5

3048

50,800

2.800"

4350

50.9

2794

4350

56.5

3175

53,800

3100

53.1

2618

3100

59.0

2975

45,700

Compressed

SPR 120 SP

2700

46.1

2640

2700

48.5

2808

51,200

2.800"

4350

49.1

2612

4350

54.5

2968

54,300

3100

53.1

2587

3100

59.0

2940

54,000

Compressed

HDY 139 SP

2700

44.7

2471

2700

47.0

2629

50,000

2.800"

4350

48.6

2504

4350

54.0

2845

54,200

3100

53.1

2495

3100

59.0

2835

53,000

Compressed

SRA 150 SBT

2700

42.8

2382

2700

45.0

2534

50,300

2.800"

4350

46.8

2432

4350

52.0

2764

53,400

3100

51.3

2424

3100

57.0

2754

52,400

Compressed

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