Performance
The .30-378 case holds as much as 120 grains (8 g) of powder without requiring a compressed load. This allows the cartridge to develop more energy than the .300 Remington Ultra Magnum and .300 Winchester Magnum, especially when handloads are used.
| Cartridge | Bullet Weight | Muzzle velocity | Muzzle energy | Notes | |||
|---|---|---|---|---|---|---|---|
| gr | g | ft/s | m/s | ft·lbf | J | ||
| .458 Win Mag | 500 | 32 | 2,240 | 680 | 5,570 | 7,550 | Winchester Safari Supreme loading |
| .338 Lapua | 300 | 19 | 2,800 | 850 | 5,224 | 7,083 | Black Hills Ammo loading |
| .375 H&H | 300 | 19 | 2,705 | 824 | 4,875 | 6,610 | Hornady Heavy Magnum loading |
| .30-378 Wby | 200 | 13 | 3,160 | 960 | 4,434 | 6,012 | Weatherby factory load |
| .300 RUM | 200 | 13 | 3,100 | 940 | 4,269 | 5,788 | Loading from Nosler custom |
| .300 Win Mag | 180 | 12 | 3,050 | 930 | 3,720 | 5,040 | Reference load by Doubletapammo |
Note: Using the bullet weight and muzzle velocity in each cartridge that provided the maximum muzzle energy. Data for the .30-378 is from. Loading data for all other cartridges can be found at
| Cartridge | Weight | Ballistic Coefficient |
Muzzle Velocity | Muzzle Energy | Velocity at 440 yd (400 m) | Energy at 440 yd (400 m) | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| gr | g | ft/s | m/s | ft·lbf | J | ft/s | m/s | ft·lbf | J | ||
| .30-06 | 165 | 11 | 0.475 | 2,938 | 896 | 3,165 | 4,291 | 2,110 | 640 | 1,633 | 2,214 |
| .30-378 | 165 | 11 | 0.475 | 3,500 | 1,100 | 4,448 | 6,031 | 2,576 | 785 | 2,428 | 3,292 |
| .30-06 | 180 | 12 | 0.507 | 2,798 | 853 | 3,130 | 4,240 | 2,044 | 623 | 1,668 | 2,262 |
| .30-378 | 180 | 12 | 0.507 | 3,420 | 1,040 | 4,676 | 6,340 | 2,559 | 780 | 2,619 | 3,551 |
| .30-06 | 200 | 13 | 0.481 | 2,586 | 788 | 2,972 | 4,029 | 1,841 | 561 | 1,502 | 2,036 |
| .30-378 | 200 | 13 | 0.481 | 3,160 | 960 | 4,434 | 6,012 | 2,300 | 700 | 2,351 | 3,188 |
Note: data for the .30-378 from Weatherby (which tracks closely to what handloaders can achieve based on loading data at. Data from the .30-06 is also from Hodgdon. The initial data used is included here for anyone who cares to run the calculations themselves.
Read more about this topic: .30-378 Weatherby Magnum
Famous quotes containing the word performance:
“Kind are her answers,
But her performance keeps no day;
Breaks time, as dancers,
From their own music when they stray.”
—Thomas Campion (1567–1620)
“True balance requires assigning realistic performance expectations to each of our roles. True balance requires us to acknowledge that our performance in some areas is more important than in others. True balance demands that we determine what accomplishments give us honest satisfaction as well as what failures cause us intolerable grief.”
—Melinda M. Marshall (20th century)
“When a book, any sort of book, reaches a certain intensity of artistic performance it becomes literature. That intensity may be a matter of style, situation, character, emotional tone, or idea, or half a dozen other things. It may also be a perfection of control over the movement of a story similar to the control a great pitcher has over the ball.”
—Raymond Chandler (1888–1959)