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Rifles, Reloading, Optics, Equipment
Reloading
New to 243 AI Question
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<blockquote data-quote="Will D" data-source="post: 1464477" data-attributes="member: 98378"><p>I had a 243 AI built twenty years ago on a Sako 579 action with a Shilen 24" 1 in 10 twist barrel. It sat in my safe until recently, when I mounted a Bushnell 4.5-30 x 50mm scope in Talley rings. Searching every source I could find for load data, I found what you did; i.e., begin with max 243 Winchester data and work up. Using Sierra HPBT bullets seated to 2,643" OAL, IMR4350 powder and Remington 9.5 primers in Lapua fire formed cases I'm getting average velocities for five shots of 3,243 fps, but with s/d of 24.73 fps. Accuracy is good, but I'm looking for better.</p></blockquote><p></p>
[QUOTE="Will D, post: 1464477, member: 98378"] I had a 243 AI built twenty years ago on a Sako 579 action with a Shilen 24" 1 in 10 twist barrel. It sat in my safe until recently, when I mounted a Bushnell 4.5-30 x 50mm scope in Talley rings. Searching every source I could find for load data, I found what you did; i.e., begin with max 243 Winchester data and work up. Using Sierra HPBT bullets seated to 2,643" OAL, IMR4350 powder and Remington 9.5 primers in Lapua fire formed cases I'm getting average velocities for five shots of 3,243 fps, but with s/d of 24.73 fps. Accuracy is good, but I'm looking for better. [/QUOTE]
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Reloading
New to 243 AI Question
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