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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
High Pressure Loads in 700 LA
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<blockquote data-quote="Bart B" data-source="post: 103597" data-attributes="member: 5302"><p>You're not off base and I don't have a fire extinguisher ready. You bring up a good point.</p><p></p><p>The tensile strength of most modern centerfire bolt actions is in the 120K to 150K range. Remington and Winchesters are in the middle of that range. I remember this from an article many years ago. Bolt lug hardness and steel type is typically enough for about 140K ppsi.</p><p></p><p>Proof pressure for the .308 Win. is about 90,000 ppsi but it's normal operating max pressure is about 63,000 ppsi. Many modern cartridges have similar numbers. That's a ways from setting the bolt lugs forward or recess faces back even if several proof loads are fired. I've seen some fired proof load cases and they wouldn't hold a primer.</p><p></p><p>Dan Lilja's web site has some info on bolt strength.</p></blockquote><p></p>
[QUOTE="Bart B, post: 103597, member: 5302"] You're not off base and I don't have a fire extinguisher ready. You bring up a good point. The tensile strength of most modern centerfire bolt actions is in the 120K to 150K range. Remington and Winchesters are in the middle of that range. I remember this from an article many years ago. Bolt lug hardness and steel type is typically enough for about 140K ppsi. Proof pressure for the .308 Win. is about 90,000 ppsi but it's normal operating max pressure is about 63,000 ppsi. Many modern cartridges have similar numbers. That's a ways from setting the bolt lugs forward or recess faces back even if several proof loads are fired. I've seen some fired proof load cases and they wouldn't hold a primer. Dan Lilja's web site has some info on bolt strength. [/QUOTE]
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High Pressure Loads in 700 LA
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