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Rifles, Reloading, Optics, Equipment
Reloading
300 Win Mag Build and Loading Questions.
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<blockquote data-quote="Bart B" data-source="post: 1148476" data-attributes="member: 5302"><p>That Willis collet die properly used will size belted cases best for life and accuracy. Use it correctly after full length sizing fired cases setting their shoulders back no more than .002". Then then those double sized cases will shoot as accurate as new belted cases.</p><p></p><p>Turning necks is needed if they vary more than .001" in thickness. Turn them just enough to clean up most of them. A spread .001" or less is fine.</p><p></p><p>Your barrel has about 1500 or less rounds of accurate barrel life shooting .300 Win Mag ammo. Shoot only 3 shots with each bullet when first testing them. If that group's small at 1/2 MOA or less, shoot a few more to see how much bigger it gets. When it gets to over 1 MOA with less than 10 shots, stop there with that bullet then change the charge weight one grain. Test at the maximum range you're willing to take a shot at.</p><p></p><p>Do the same with other bullets and powders then pick the one you want to use. Then get zeros for every hundred yards to your maximum range to shoot at.</p></blockquote><p></p>
[QUOTE="Bart B, post: 1148476, member: 5302"] That Willis collet die properly used will size belted cases best for life and accuracy. Use it correctly after full length sizing fired cases setting their shoulders back no more than .002". Then then those double sized cases will shoot as accurate as new belted cases. Turning necks is needed if they vary more than .001" in thickness. Turn them just enough to clean up most of them. A spread .001" or less is fine. Your barrel has about 1500 or less rounds of accurate barrel life shooting .300 Win Mag ammo. Shoot only 3 shots with each bullet when first testing them. If that group's small at 1/2 MOA or less, shoot a few more to see how much bigger it gets. When it gets to over 1 MOA with less than 10 shots, stop there with that bullet then change the charge weight one grain. Test at the maximum range you're willing to take a shot at. Do the same with other bullets and powders then pick the one you want to use. Then get zeros for every hundred yards to your maximum range to shoot at. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
300 Win Mag Build and Loading Questions.
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