You might look at the 7-300WSM on a long action, throated long enough to seat long range bullets for more powder capacity. You can get 2950 on a short action with 175's without doing much load development, and should be able to hit your 3000 with the right powders. The 7-300 uses the readily available 300 WSM as its parent case, as opposed to the hard to find 7WSM brass.
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