Alliant 2025 Smokeless Powder

Created by Elgin Gates for handgun silhouette shooting. The 7mm IHMSA is based upon the .300 Savage case necked down to 7 mm.

This cartridge was chambered in the Wichita bolt action single shot pistol. This cartridge is almost as powerful as the slightly larger 7mm-08 Remington.

There is no SAAMI pressure limit for the 7mm IHMSA. Based on the strength of the Wichita bolt action handgun, the maximum loads listed below do not exceed that of the 7mm-08 Remington.

7mm IHMSA

Gun

DOUGLAS

Max Length

1.866"

Barrel Length

14"

Trim Length

1.846"

Primer

CCI 200

OAL Max

2.600"

Case

REM

OAL Min

--

START LOADS

MAXIMUM LOADS

Cartridge

Bullet

Powder

Grains

Vel.

Powder

Grains

Vel.

P.S.I.

Length Comment

HDY120SSP

2015

32.4

2203

2015

36.0

2503

52,300

2.575"

2230

34.2

2168

2230

38.0

2464

46,500

2460

35.1

2204

2460

39.0

2505

49,200

2495

35.1

2164

2495

39.0

2459

48,000

2520

36.0

2203

2520

40.0

2503

48,700

2700

41.8

2212

2700

44.0

2353

43,700

Compressed

HDY139 SP

2015

30.6

2022

2015

34.0

2298

50,000

2.765" *

2230

32.9

2046

2230

36.5

2325

49,900

2460

33.3

2066

2460

37.0

2348

52,000

2495

33.3

2059

2495

37.0

2340

49,800

2520

33.8

2055

2520

37.5

2335

51,500

2700

39.4

2147

2700

41.5

2284

50,500

NOS 150 BT

2015

29.7

1945

2015

33.0

2210

51,000

2.650" *

2230

32.0

1976

2230

35.5

2245

50,100

2460

32.4

1978

2460

36.0

2248

51,700

2495

31.5

1935

2495

35.0

2199

48,900

2520

32.4

1942

2520

36.0

2207

49,500

2700

39.4

2114

2700

41.5

2249

49,900

.471

11,96mm

.300 7,62mm APPROX.

.2850 7,239mm

IHMSA SPECIFICATIONS

7mm IHMSA (continued)

START LOADS

MAXIMUM LOADS

Cartridge

Bullet

Powder

Grains

Vel.

Powder

Grains

Vel.

P.S.I.

Length Comment

SRA 168 HPBT

2015

29.3

1843

2015

32.5

2094

50,100

2.650" *

2230

31.1

1848

2230

34.5

2100

49,500

2460

31.5

1868

2460

35.0

2123

48,200

2495

31.5

1860

2495

35.0

2114

46,900

2520

32.0

1876

2520

35.5

2132

50,000

2700

37.5

1998

2700

39.5

2126

51,000

HDY 175 SP

2015

28.8

1810

2015

32.0

2057

51,600

2.700" *

2230

30.6

1784

2230

34.0

2027

47,800

2460

30.6

1782

2460

34.0

2025

48,000

2495

30.6

1818

2495

34.0

2066

51,000

2520

31.5

1827

2520

35.0

2076

51,100

2700

37.1

1939

2700

39.0

2063

50,100

* Over MAX Recommended OAL

* Over MAX Recommended OAL

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