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Rifles, Reloading, Optics, Equipment
Reloading
.338 win mag reloads NEED HELP!
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<blockquote data-quote="Clark" data-source="post: 676910" data-attributes="member: 6600"><p>With a 26" barrel and 250 gr and running right at the SAAMI limit of 64kpsi, 2725 fps is all one could expect from extreme powders.</p><p></p><p>That is the load I use 69 gr H4350 250 gr Nos Gold Part. and I only get 2600 fps with a 24" barrel, but I have a slow jug of H4350.</p><p></p><p>If you go to a temp unstable powder and push the pressure to 70 kpsi, the threshold of long brass life, you will still not break 2800 fps.</p><p></p><p>What does it all mean?</p><p>You can't get to 3000 fps with a 26" 338WM and 250 gr bullet.</p><p>Give up on that.</p><p></p><p></p><p>If you reamed out to 338 Lapua Magnum, registered at 61kpsi, with a 26" barrel, 250 gr bullet, extreme powder, you can reach 2900 fps, clearly 175 fps more when playing by the rules.</p><p>That is like standing 100 yard closer for velocity.</p></blockquote><p></p>
[QUOTE="Clark, post: 676910, member: 6600"] With a 26" barrel and 250 gr and running right at the SAAMI limit of 64kpsi, 2725 fps is all one could expect from extreme powders. That is the load I use 69 gr H4350 250 gr Nos Gold Part. and I only get 2600 fps with a 24" barrel, but I have a slow jug of H4350. If you go to a temp unstable powder and push the pressure to 70 kpsi, the threshold of long brass life, you will still not break 2800 fps. What does it all mean? You can't get to 3000 fps with a 26" 338WM and 250 gr bullet. Give up on that. If you reamed out to 338 Lapua Magnum, registered at 61kpsi, with a 26" barrel, 250 gr bullet, extreme powder, you can reach 2900 fps, clearly 175 fps more when playing by the rules. That is like standing 100 yard closer for velocity. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
.338 win mag reloads NEED HELP!
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