.30 Thompson Center

.30 Thompson Center
.30 TC (center) compared to .308 Winchester (left) and 6.5mm Creedmoor (right)
Place of origin	United States
Production history
Manufacturer	Hornady
Produced	2007
Specifications
Case type	Rimless
Bullet diameter	7.62 mm (0.300 in)
Neck diameter	8.56 mm (0.337 in)
Shoulder diameter	11.78 mm (0.464 in)
Base diameter	11.95 mm (0.470 in)
Rim diameter	12.01 mm (0.473 in)
Rim thickness	1.37 mm (0.054 in)
Case length	48.77 mm (1.920 in)
Overall length	67.56 mm (2.660 in)
Case capacity	3.50 cm3 (54.0 gr H2O)
Rifling twist	305 mm (1 in 12")
Maximum pressure (C.I.P.)	425.00 MPa (61,641 psi)
Ballistic performance
Bullet mass/type Velocity Energy 150 gr (10 g) SST 3,000 ft/s (910 m/s) 2,997 ft⋅lbf (4,063 J) 165 gr (11 g) SST 2,850 ft/s (870 m/s) 2,975 ft⋅lbf (4,034 J)
Source(s): [1][2]

The .30 Thompson Center (7.62×48 mm), designated 30 THOMPSON CENTER by SAAMI, 30 TC by the C.I.P., is a centerfire rifle cartridge developed for Thompson Center Arms by Hornady intended to deliver .30-06 Springfield performance in a .308 Winchester length round.^[3]

The cartridge was initially offered in the Icon series of bolt-action rifles in 2007, which were released at the same time. While ballistic performance was as expected, consumer acceptance was low and the round has not achieved commercial success.^[4] The 6.5mm Creedmoor cartridge was created by necking down the .30 Thompson Center, and has achieved widespread popularity.^[5][6]