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Versatility Ballistics charts published in "Cartridges of the World" show that both the .270 Win. and the .270 Wby. Mag. can be loaded with projectiles ranging from 90 to 150 grains. In the real world, the vast majority of bullets in both cartridges weigh 130, 140, or 150 grains. There are a few outliers among .270 Win. options, but by and large, those are the three
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