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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
30/338 Lapua
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<blockquote data-quote="Brent" data-source="post: 25638" data-attributes="member: 99"><p>Wayne,</p><p></p><p>I know you are looking for all the real world data now, but for what it's worth, I used an OAL of 3.9" for all of them on that LFAD program of mine, with your 34" barrel. All were at 65k psi.</p><p></p><p>Here's what it came up with...</p><p></p><p>30/338 Lapua with 240 SMK = 3025</p><p>30/338 Lapua with 220 SMK = 3150</p><p></p><p>30/338 Lapua Imp with 240 SMK = 3100</p><p>30/338 Lapua Imp with 220 SMK = 3225</p><p></p><p>300 Ultra with 240 SMK = 3025</p><p>300 Ultra with 220 SMK = 3150</p><p></p><p>300 Ultra Imp with 240 SMK = 3035</p><p>300 Ultra Imp with 220 SMK = 3175</p><p></p><p>The powder used here was slightly slower burning than the RL25 I've been using, my 26" barreled 300 Ultra is getting 2950 fps with a 220 SMK at a 67,000 psi average. The program predicts a somewhat "optimum" outlook based on you using a pretty slow powder here. At 3031 fps I was up into the 71,500 psi range, factory ammo produces about 62k psi in my gun...</p><p></p><p>[ 03-02-2003: Message edited by: Brent ]</p></blockquote><p></p>
[QUOTE="Brent, post: 25638, member: 99"] Wayne, I know you are looking for all the real world data now, but for what it's worth, I used an OAL of 3.9" for all of them on that LFAD program of mine, with your 34" barrel. All were at 65k psi. Here's what it came up with... 30/338 Lapua with 240 SMK = 3025 30/338 Lapua with 220 SMK = 3150 30/338 Lapua Imp with 240 SMK = 3100 30/338 Lapua Imp with 220 SMK = 3225 300 Ultra with 240 SMK = 3025 300 Ultra with 220 SMK = 3150 300 Ultra Imp with 240 SMK = 3035 300 Ultra Imp with 220 SMK = 3175 The powder used here was slightly slower burning than the RL25 I've been using, my 26" barreled 300 Ultra is getting 2950 fps with a 220 SMK at a 67,000 psi average. The program predicts a somewhat "optimum" outlook based on you using a pretty slow powder here. At 3031 fps I was up into the 71,500 psi range, factory ammo produces about 62k psi in my gun... [ 03-02-2003: Message edited by: Brent ] [/QUOTE]
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30/338 Lapua
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