Load data

[trailboy68]

How do you find the factory load data? Like for winchester super x 308 at 150 gr bullet.

Thanks

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[trailboy68]

I am meaning like what powder and amount they may use. Thanks

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[NapalmCheese]

How do you find the factory load data? Like for winchester super x 308 at 150 gr bullet.

Thanks

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Read the box and then run it over a chronograph to get an accurate representation of what that lot of ammo will do velocity wise in your rifle.

I am meaning like what powder and amount they may use. Thanks

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Oh, that's what you meant.
You don't.

For the most part ammunition manufacturers use bulk powder which is loaded, tested, tweaked and tested again until they reach their claimed performance at which time an entire lot of ammo will be loaded. You can't generally buy this bulk powder, and the bulk powder they use may or may not be some commercial version of a canister powder.

Ultimately, if you want to replicate a load you're going to need a reloading manual or two, a chronograph, and some range time. You'll get close if not spot on. Though if you're going to go to all of that trouble you may as well just develop a highly accurate load regardless of whether it hits some manufacturer's claimed velocity.

[trailboy68]

Ah ok, kind of pressed for time and thought could but some that would be closer enough to my load, oh well. . Thanks

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