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The .243 Catbird was developed by Jarrett Rifles to achieve 4000 fps with a 68-70 grain bullet. [10] [11] Actual performance tests showed the cartridge achieved 4100 fps with a 70 grain bullet, 3800 fps with an 85 grain bullet, and 3500 fps with a 95 grain projectile. [10]
Though not optimal for dangerous game, the .30-06 is adequate for hunting African plains game. [42] With 150-grain bullets, the .30-06 Springfield is a perfect option for medium-sized game such as deer and sheep. Leaving the muzzle at 2950 fps, it gives the hunter a maximum point blank range slightly short of 300 yards.
A 180 gr (12 g) bullet at 2,775 ft/s (846 m/s), which is a very common 30-06 Springfield load and not its true maximum potential, achieves 3,079 ft⋅lbf (4,175 J) of energy. Due to the slug's larger caliber and shape, it has greater air resistance and slows down much more quickly than a bullet.
Designed to improve the performance of lever-action rifle designs dating back to the 1890s, the 7-30 Waters is a .30-30 Winchester necked down to 7 mm (.284 caliber). Even with the lower chamber pressures allowed by the lever-action rifle and the flat-tipped bullets necessitated by the tubular magazines, the 7-30 Waters offers a significant ...
The principle at work in the short magnum cartridge is the fitting of larger volumes of powder in closer proximity to the primer's flash hole, resulting in more-uniform ignition. .300 WSM has a case capacity of 80 grains. The .30-06 Springfield holds 69 grains; .308 Winchester holds 56 grains; 30-30 Winchester holds 45 grains.
With heavier bullets the .240 Wby. Mag. makes for a good deer hunting cartridge, but it does tend to require a long (>23 inches (580 mm).) barrel in order to achieve peak performance. Performance for 100 grain bullet from utilizing a factory 26" test barrel and a Nosler Partition bullet)
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The .30-06 is significantly more powerful in its 165-180 grain loads, especially when handloads or factory loads with bullets of good BC are used. However, Remington lists its .30-06 150-grain PSP as retaining 1,445 fpe at 300 yards, while listing its 140-grain 7mm-08 PSP with 1490 fpe at the same distance.