Xmm MAUSER

The 8mm Mauser was the primary German military rifle cartridge through both World Wars. As initially adopted it used bullets of .318" diameter which is known as the "J" bore. In 1905 the bullet diameter was increased to .323" which is known as the "JS" bore.

For several years after the change in bore dimensions by the German military, the manufacturers of sporting rifles in Europe continued to use both bore sizes. This causes no confusion to the European users of these cartridges. The American shooting public, however, tends to lump all 8mm Mauser cartridges into one category. This fact, plus the importation of older military rifles and some sporting rifles using the smaller dimension bore, has created the potential for damage or injury if the 8x57 "JS" cartridge is fired in an 8x57 "J" firearm.

SAAMI's solution to this problem was to limit the pressures of American manufactured 8mm Mauser ammunition to 35,000 P.S.I. This low pressure loading allows the safe use of American ammunition in both weapons.

8x57mm MAUSER

Gun

DOUGLAS

Max Length

2.240"

Barrel Length

24"

Trim Length

2.220"

Primer

CCI 250

OAL Max

3.230"

Case

REM

OAL Min

2.815"

START LOADS

MAXIMUM LOADS

Cartridge

Bullet

Powder

Grains

Vel.

Powder

Grains

Vel.

P.S.I.

Length

Comment

170 (L) FNGC

4350

42.3

1983

4350

47.0

2253

31,700

2.710"

RCBS

3100

47.7

1940

3100

53.0

2205

29,700

Compressed

8700

49.1

1581

8700

54.5

1797

24,100

Compressed

HDY 125 SP

4350

47.7

2128

4350

53.0

2418

25,200

2.890"

Compressed

3100

47.7

1923

3100

53.0

2185

20,400

Compressed

8700

49.1

1573

8700

54.5

1788

18,400

Compressed

HDY 150 SP

4350

45.0

2107

4350

50.0

2394

32,500

2.950"

Compressed

3100

47.7

1961

3100

53.0

2228

27,100

Compressed

8700

49.1

1522

8700

54.5

1730

21,200

Compressed

START LOADS

MAXIMUM LOADS

Cartridge

Bullet

Powder

Grains

Vel.

Powder

Grains

Vel.

P.S.I.

Length

Comment

HDY 170 RN

4350

43.2

1991

4350

48.0

2262

33,600

2.840"

3100

47.7

1919

3100

53.0

2181

30,400

Compressed

8700

49.1

1523

8700

54.5

1731

25,400

Compressed

SPR 200 SP

4350

39.6

1794

4350

44.0

2039

31,200

2.970"

3100

44.1

1742

3100

49.0

1980

28,100

Compressed

8700

49.1

1489

8700

54.5

1692

26,600

Compressed

HDY 220 SP

4350

37.8

1677

4350

42.0

1906

30,800

2.990"

3100

44.3

1712

3100

49.2

1946

30,900

Compressed

8700

46.4

1331

8700

51.5

1512

23,200

Compressed

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