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Rifles, Reloading, Optics, Equipment
Reloading
How far over maximum?
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<blockquote data-quote="Barrelnut" data-source="post: 1541051" data-attributes="member: 74902"><p>Well, I'll jump in. Good question. IMO load data books have gotten more conservative over the years. Lots of book loads are tested in 26" barrels or 24". Powder speed can vary some lot to lot. The altitude your are shooting at can affect the velocity see at the chrony (especially an optical one). Throat lengths can vary based on the reamer used. etc, etc, etc.... I think this is why they say each rifles is an individual.</p><p></p><p>Now days, I set the bullet .010~.020 off the lands. I start going up in .3 gr. increments until I hit pressure signs. ( pancaked primers and ejector marks). Also, once a rifle hits pressure it is easy to feel in recoil amounts too. Recoil will really start to increase with additional powder. All the while watching on the chrony. What I got is what I got at that point. I have seen it faster than the book, with a shorter barrel. I have found it slower with a longer barrel. Have seen it a couple grains over book max and even not quite being able to get there.</p><p></p><p>That chrony really opened up a whole new world didn't it? <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite7" alt=":p" title="Stick Out Tongue :p" loading="lazy" data-shortname=":p" /></p></blockquote><p></p>
[QUOTE="Barrelnut, post: 1541051, member: 74902"] Well, I'll jump in. Good question. IMO load data books have gotten more conservative over the years. Lots of book loads are tested in 26" barrels or 24". Powder speed can vary some lot to lot. The altitude your are shooting at can affect the velocity see at the chrony (especially an optical one). Throat lengths can vary based on the reamer used. etc, etc, etc.... I think this is why they say each rifles is an individual. Now days, I set the bullet .010~.020 off the lands. I start going up in .3 gr. increments until I hit pressure signs. ( pancaked primers and ejector marks). Also, once a rifle hits pressure it is easy to feel in recoil amounts too. Recoil will really start to increase with additional powder. All the while watching on the chrony. What I got is what I got at that point. I have seen it faster than the book, with a shorter barrel. I have found it slower with a longer barrel. Have seen it a couple grains over book max and even not quite being able to get there. That chrony really opened up a whole new world didn't it? :p [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
How far over maximum?
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