Mm TCU
Another cartridge developed by Wes Ugalde and chambered originally by Thompson/Center Arms.
This cartridge is based on the .223 Remington case necked up to 6.5mm.
All the loads developed in our pressure barrel proved to be quite consistent. The 6.5 T/CU should be adequate for small game and varmints at ranges up to 200 yards. There is no SAAMI pressure limit for the 6.5 T/CU. Based on the recommendations of Thompson/ Center, these loads are limited to the same pressures as the .223 Remington cartridge.
6.5mm T/CU | |||
Gun |
DOUGLAS |
Max Length |
1.749" |
Barrel Length |
14" |
Trim Length |
1.740" |
Primer |
CCI 400 |
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 |
SRA 85 HP |
1680 |
20.7 |
2094 |
1680 |
23.0 |
2379 |
43,600 |
2.400" |
2015 |
25.2 |
2268 |
2015 |
28.0 |
2577 |
50,100 | ||
2230 |
26.6 |
2218 |
2230 |
29.5 |
2520 |
47,100 | ||
2460 |
27.0 |
2238 |
2460 |
30.0 |
2543 |
47,800 |
Compressed | |
2495 |
25.7 |
2081 |
2495 |
28.5 |
2365 |
40,900 |
Compressed | |
2520 |
27.9 |
2154 |
2520 |
31.0 |
2448 |
41,300 |
Compressed | |
SRA100 HP |
1680 |
19.2 |
1919 |
1680 |
21.3 |
2181 |
45,200 |
2.420" |
2015 |
23.0 |
2057 |
2015 |
25.5 |
2338 |
49,200 | ||
2230 |
25.2 |
2114 |
2230 |
28.0 |
2402 |
49,500 | ||
2460 |
25.2 |
2103 |
2460 |
28.0 |
2390 |
47,400 | ||
2495 |
23.9 |
1934 |
2495 |
26.5 |
2198 |
40,300 |
Compressed | |
2520 |
25.2 |
2035 |
2520 |
28.0 |
2312 |
41,100 |
Compressed | |
SRA120 SP |
1680 |
18.3 |
1730 |
1680 |
20.3 |
1966 |
45,900 |
2.495" |
2015 |
22.1 |
1907 |
2015 |
24.5 |
2167 |
48,100 | ||
2230 |
23.4 |
1923 |
2230 |
26.0 |
2185 |
48,800 | ||
2460 |
23.9 |
1918 |
2460 |
26.5 |
2180 |
48,700 | ||
2495 |
23.4 |
1888 |
2495 |
26.0 |
2146 |
49,000 |
Compressed | |
2520 |
25.2 |
1934 |
2520 |
28.0 |
2198 |
45,200 |
Compressed |

START LOADS |
MAXIMUM LOADS |
Cartridge | ||||||
Bullet |
Powder |
Grains |
Vel. |
Powder |
Grains |
Vel. |
P.S.I. |
Length Comment |
HDY 140 HPBT |
1680 |
17.1 |
1578 |
1680 |
19.0 |
1793 |
43,300 |
2.550" |
2015 |
20.7 |
1765 |
2015 |
23.0 |
2006 |
50,200 | ||
2230 |
22.5 |
1807 |
2230 |
25.0 |
2053 |
50,000 | ||
2460 |
23.0 |
1823 |
2460 |
25.5 |
2072 |
47,600 | ||
2495 |
21.6 |
1705 |
2495 |
24.0 |
1937 |
40,600 |
Compressed | |
2520 |
23.9 |
1826 |
2520 |
26.5 |
2075 |
47,400 |
Compressed | |
HDY160 RN |
1680 |
18.5 |
1553 |
1680 |
20.5 |
1765 |
46,300 |
2.570" |
2015 |
21.2 |
1664 |
2015 |
23.5 |
1891 |
47,100 | ||
2230 |
22.5 |
1687 |
2230 |
25.0 |
1917 |
48,400 | ||
2460 |
23.0 |
1712 |
2460 |
25.5 |
1946 |
47,100 | ||
2495 |
23.0 |
1639 |
2495 |
25.5 |
1863 |
43,100 |
Compressed | |
2520 |
23.9 |
1718 |
2520 |
26.5 |
1952 |
48,500 |
Compressed |

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