Mm TCU

One of the series of cartridges developed by Wes Ugalde and chambered originally by Thompson/Center Arms. This cartridge is essentially the .223 Remington case necked up to 6mm.

The 6mm T/CU is an effective varmint cartridge at ranges up to 200 yards.

There is no SAAMI pressure limit for the 6mm T/CU. Based on the recommendations of Thompson/Center, our maximum pressures do not exceed that of the .223 Remington.

6mm T/CU

Gun

DOUGLAS

Max Length

1.760"

Barrel Length

14"

Trim Length

1.740"

Primer

CCI 400

OAL Max

2.520"

Case

REM

OAL Min

START LOADS

MAXIMUM LOADS

Cartridge

Bullet

Powder

Grains

Vel.

Powder

Grains

Vel.

P.S.I.

Length

Comment

SRA 60 HP

2015

25.2

2515

2015

28.0

2858

47,400

2.320"

Compressed

2230

25.7

2411

2230

28.5

2740

45,200

Case Full

2460

26.1

2417

2460

29.0

2747

45,900

Case Full

2495

24.3

2196

2495

27.0

2495

37,100

Compressed

2520

26.1

2378

2520

29.0

2702

42,000

Compressed

HDY 70 SX

2015

24.3

2335

2015

27.0

2653

45,800

2.390"

Case Full

2230

24.8

2277

2230

27.5

2588

45,900

2460

25.7

2325

2460

28.5

2642

46,600

2495

24.3

2185

2495

27.0

2483

40,300

Compressed

2520

26.1

2285

2520

29.0

2597

43,000

Compressed

SPR 80 SP

2015

23.4

2236

2015

26.0

2541

47,600

2.380"

2230

24.3

2218

2230

27.0

2521

48,500

2460

24.8

2223

2460

27.5

2526

46,900

2495

24.3

2180

2495

27.0

2477

47,900

Compressed

2520

25.2

2202

2520

28.0

2502

47,100

Compressed

SRA 85 HPBT

2015

22.5

2160

2015

25.0

2455

47,200

2.390"

2230

23.0

2119

2230

25.5

2408

48,200

2460

23.7

2153

2460

26.3

2447

49,400

2495

23.4

2119

2495

26.0

2408

48,600

Compressed

2520

24.3

2182

2520

27.0

2480

48,700

6mm T/CU (continued)

START LOADS

MAXIMUM LOADS

Cartridge

Bullet

Powder

Grains

Vel.

Powder

Grains

Vel.

P.S.I.

Length Comment

SRA100 SBT

2015

21.2

2008

2015

23.5

2282

50,000

2.520"

2230

21.6

1952

2230

24.0

2218

50,000

2460

22.1

1964

2460

24.5

2232

47,500

2495

22.1

1985

2495

24.5

2256

49,800

2520

22.5

1984

2520

25.0

2254

48,500

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Hunting Mastery Selected Tips

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