Description
Details
Designed to replace the 375 Weatherby Magnum, deep penetration and bone smashing power are the calling cards of the 378. Its massive case holds so much powder that Federal designed its super-hot 215 primer to handle the load. Roy Weatherby’s 378 delivers 34 percent more energy at the muzzle than the powerful 375 H&H Magnum. Since 1955, the 378 has become one of the world’s most popular cartridges for the largest of big game animals.
BALLISTICS
Velocity
| Bullet Type | Ballistic Coefficient | @ Muzzle | 100 Yards | 200 Yards | 300 Yards | 400 Yards | 500 Yards |
|---|---|---|---|---|---|---|---|
| 270 Grain Spire Point | 0.380 | 3180 | 2921 | 2677 | 2445 | 2225 | 2017 |
| 270 Grain TSX | 0.326 | 3060 | 2767 | 2493 | 2235 | 1992 | 1767 |
| 300 Grain Round Nose Expanding | 0.250 | 2925 | 2558 | 2220 | 1908 | 1627 | 1383 |
| 300 Grain Full Metal Jacket | 0.275 | 2925 | 2591 | 2280 | 1991 | 1725 | 1489 |
Energy
| Bullet Type | Ballistic Coefficient | @ Muzzle | 100 Yards | 200 Yards | 300 Yards | 400 Yards | 500 Yards |
|---|---|---|---|---|---|---|---|
| 270 Grain Spire Point | 0.380 | 6062 | 5115 | 4295 | 3583 | 2968 | 2438 |
| 270 Grain TSX | 0.326 | 5613 | 4591 | 3726 | 2994 | 2380 | 1871 |
| 300 Grain Round Nose Expanding | 0.250 | 5699 | 4360 | 3283 | 2424 | 1764 | 1274 |
| 300 Grain Full Metal Jacket | 0.275 | 5699 | 4470 | 3461 | 2640 | 1983 | 1476 |
Trajectory
| Bullet Type | Ballistic Coefficient | 100 Yards | 200 Yards | 300 Yards | 400 Yards | 500 Yards |
|---|---|---|---|---|---|---|
| 270 Grain Spire Point | 0.380 | 1.3 | 0.0 | -6.1 | -18.1 | -37.1 |
| 270 Grain TSX | 0.326 | 1.3 | 0.0 | -6.2 | -17.9 | -36.1 |
| 300 Grain Round Nose Expanding | 0.250 | 1.9 | 0.0 | -9.0 | -27.8 | -60.0 |
| 300 Grain Full Metal Jacket | 0.275 | 1.8 | 0.0 | -8.6 | -26.1 | -55.4 |
Specifications
Additional Information
| Available Products |
|---|
2 customer reviews
-
Exelent
By dråparn December 25, 201610+ moose roebuck and beaver have felt the power of the 378. My favorite rifle
-
Raw Power.....
By Norbert August 30, 2016It is the "what ever walks on this planet" cartridge......
Write Your Own Review
 |
Contact Us
Weatherby Customer Service representatives are available to assist you Monday through Thursday 6:30 a.m. to 5:00 p.m. (PST) at (800) 227-2016 or by emailing info@weatherby.com.
Written inquires can be mailed to:
Weatherby, Inc.
1605 Commerce Way
Paso Robles, CA 93446.
