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30 Thompson Center Ballistics — Velocity, Energy & Drop

Name: 30 Thompson Center Ballistics Dataset
Creator: CaliberAtlas

Also known as: .30 Thompson Center, 30 TC

Specifications

Type	rifle (centerfire)
Selected factory load	150gr Hornady SST
Published muzzle velocity	3000 fps
Published muzzle energy	2997 ft-lb
Published G1 ballistic coefficient	0.415
Manufacturer item	81004
Case length	48.77 mm
Overall length	2.66 in
Listed maximum pressure	62000 PSI
Common twist rate	1:12

30 Thompson Center Modeled Ballistics Table

Range (yd)	Velocity (fps)	Calculated Energy (ft-lb)	Drop (in)	Wind drift (in)	Time of flight (s)
0	3000	2997	-1.5	0	0
100	2769	2553	1.52	0.72	0.104
200	2549	2164	0	3	0.217
300	2340	1823	-6.89	7.03	0.34
400	2140	1525	-20.15	13.03	0.474
500	1951	1267	-41.02	21.28	0.621
600	1772	1046	-71.06	32.08	0.782
700	1606	859	-112.2	45.8	0.96
800	1454	704	-166.87	62.78	1.157
900	1319	579	-238.04	83.35	1.373
1000	1205	483	-329.23	107.7	1.612

Listed Use Context

The listed uses do not identify an explicit big-game hunting role, so deer- and elk-sized energy references aren't shown. Evaluate the named load using its available source data and any displayed trajectory, then verify the result for the listed target, competition, defensive, tactical, or duty context.

Data & Sources

Published BCs depend on a reference drag model and stated velocity conditions. A source review does not independently measure a BC. Understanding BC sources

Selected exact load: 150gr Hornady SST
Velocity & BC: manufacturer-published inputs (24″ test barrel); see the primary-source receipt below
Trajectory & downrange energy: CaliberAtlas G1 point-mass model from the selected load's manufacturer-published muzzle velocity and G1 BC — see model accuracy and limits
Conditions: 59°F · 29.92 inHg · sea level · 50% RH · 1.5″ sight height · 200 yd zero · 10 mph full-value crosswind · 100 yd steps through 1,000 yd
Data updated: August 23, 2026

Primary-source receipt

Publisher: Hornady Manufacturing · Manufacturer item: 81004 · Published test barrel: 24″

Source document: 30 TC 150 gr SST Superformance · reviewed by CaliberAtlas 2026-08-23.

Published G1 0.415 — exact loaded-product source, Embedded var item: SKU 81004, ball_coef_type_1 (G1), ball_coef_1 .415, and ball_coef_2_f null

Manufacturer-published inputs

Item 81004, 150 gr SST, 3,000 fps, 2,997 ft-lb, G1 0.415 (exact loaded-product source), and a 24″ test barrel.

CaliberAtlas-modeled outputs

Trajectory, retained velocity, calculated retained energy, drop, wind drift, and time of flight use the G1 point-mass model. These outputs are calculated by CaliberAtlas, not published by Hornady Manufacturing.

Your barrel, ammunition lot, and conditions will differ — always verify against the manufacturer's data and your own rifle.

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Learn the Fundamentals

How this data is produced · Model accuracy and limits