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Rifles, Reloading, Optics, Equipment
Reloading
257 weatherby mag
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<blockquote data-quote="backwoods83" data-source="post: 597688" data-attributes="member: 29890"><p>I have loaded as high as 68.5grns at 3.325" without issues, but id start at around 60 and go up 1 grn at a time till you feel snug bolt lift, that's the best way to find pressure in a weatherby chambering. Remember roy weatherby designed these in the 40s when surplus 4350 was one of the slowest powders, they like faster powders more so than what most people think. Be careful though they due like to run high pressures with factory freebore.</p></blockquote><p></p>
[QUOTE="backwoods83, post: 597688, member: 29890"] I have loaded as high as 68.5grns at 3.325" without issues, but id start at around 60 and go up 1 grn at a time till you feel snug bolt lift, that's the best way to find pressure in a weatherby chambering. Remember roy weatherby designed these in the 40s when surplus 4350 was one of the slowest powders, they like faster powders more so than what most people think. Be careful though they due like to run high pressures with factory freebore. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
257 weatherby mag
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