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Rifles, Reloading, Optics, Equipment
Reloading
rookie question lapua 338 AI
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<blockquote data-quote="kaseyfied" data-source="post: 1035730" data-attributes="member: 13743"><p>My 338AI had a 1° taper in the chamber from the start of the lands. I had no problem shooting 338 lapua brass. If its a AI chamber then it has to be 40° , so headspacing should be the same as someone else's 338AI, even shot a 338 rouge with factory lapua brass to fireforming with no issue. My suggestion is don't size the brass it will be fine, run the brass through the expander ball only to uniform the case mouths, then just do usual case prep, seat bullet right at lands and fireform them. I would start around 92 grains for retumbo, max for my rifle was 102, but do not use this max load, work up to yours. </p><p></p><p>I have had no problem fire forming and working up loads. But everything has their own twist. I would fire form 50 cases, and break in the barrel at the same time if you have not already. Just what I would do. On a side note, I ended up switching to rl33, I got awesome velocities with it in my 30 inch custom. Just a thought<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> have fun, you will never go back, awesome chambering!!!!</p><p></p><p>Kasey</p></blockquote><p></p>
[QUOTE="kaseyfied, post: 1035730, member: 13743"] My 338AI had a 1° taper in the chamber from the start of the lands. I had no problem shooting 338 lapua brass. If its a AI chamber then it has to be 40° , so headspacing should be the same as someone else's 338AI, even shot a 338 rouge with factory lapua brass to fireforming with no issue. My suggestion is don't size the brass it will be fine, run the brass through the expander ball only to uniform the case mouths, then just do usual case prep, seat bullet right at lands and fireform them. I would start around 92 grains for retumbo, max for my rifle was 102, but do not use this max load, work up to yours. I have had no problem fire forming and working up loads. But everything has their own twist. I would fire form 50 cases, and break in the barrel at the same time if you have not already. Just what I would do. On a side note, I ended up switching to rl33, I got awesome velocities with it in my 30 inch custom. Just a thought:) have fun, you will never go back, awesome chambering!!!! Kasey [/QUOTE]
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rookie question lapua 338 AI
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