WebAccording to QuickLoad, the case capacities of .300 Win Mag brass produced by four ammunition manufacturers measure as follows: Remington 88.0 grains of H 2 O (5.70 ml) Federal 92.0 grains of H 2 O (5.96 ml) Winchester 93.8 grains of H 2 O (6.08 ml) Norma 95.5 grains of H 2 O (6.19 ml) .300 Winchester Magnum SAAMI cartridge dimensions. .45-70 Government, 8.59mm (.338) Lazzeroni Titan, .450 Dakota, .338 Remington Ultra Magnum, .240 Weatherby Magnum, 7mm Dakota, .30-30 Winchester, .416 Weatherby Magnum, 7mm Remington Magnum, 7mm-08 Remington, .25-06 Remington, .416 Rigby, .243 Winchester, .458 Lott, .338 Winchester Magnum. By adding trajectories to the panel on the right you may produce charts and graphs that show the different trajectories side by side. WebHere, we see that the .300 Win Mag is traveling at just 2,001 ft/s, which is 27 ft/s slower than the .30-06s 2,028 ft/s. [17][18], "So, while the .300 Winchester Magnum does very well with standard .30-caliber hunting bullets from 150 to 180 grains, it starts to lose ground with extra-heavy bullets of 200 grains and more"[17], With its velocity, low bullet drop and high energy retention, the .300 Winchester Magnum is useful for hunting sheep and other mountain game species, even at extended range, which may be considered unethical for many sport hunters. If you do not agree with these terms and conditions, please disconnect immediately from this website. Coaching volleyball is one of my biggest passions. From Alberta to Africa, the .300 Win. Recommended twist ratio is 1:10 (254mm).