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Rifles, Reloading, Optics, Equipment
Reloading
Not the first time... 7mm Rem Mag - issues with ELD-X 175gr.
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<blockquote data-quote="lovec_1" data-source="post: 1693878" data-attributes="member: 15032"><p>I do understand, but look at it from my point of view. Am looking for a swift load for a Magnum cartridge with high BC heavy-for-caliber bullet. If I would start somewehere around 64.0gr MRP-2, it will produce velocity approx. 2650 fps. To achieve at least 2800 fps I've to load at least 68 gr. It will make no sense if I would hit some node around 66-67 gr., it will be still slow. Thatswhy I started with 68.0 gr and worked up in 1/2 grain increments up to 70.0gr. My QL velocity calculation correlate pretty well with LabRadar measurements.</p><p>I still have some bullets so tomorrow will the story continue on the range.</p><p>Thanks for your post.</p><p></p><p>I've run the numbers in Berger's twist rate stability calculator, please, see yourself.</p><p>Click on preview for bigger pics.</p><p></p><p><a href="https://ibb.co/VC8RKGg" target="_blank"><img src="https://i.ibb.co/VC8RKGg/stability-1.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a> <a href="https://ibb.co/GC9N7ss" target="_blank"><img src="https://i.ibb.co/GC9N7ss/stability-2.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p></blockquote><p></p>
[QUOTE="lovec_1, post: 1693878, member: 15032"] I do understand, but look at it from my point of view. Am looking for a swift load for a Magnum cartridge with high BC heavy-for-caliber bullet. If I would start somewehere around 64.0gr MRP-2, it will produce velocity approx. 2650 fps. To achieve at least 2800 fps I've to load at least 68 gr. It will make no sense if I would hit some node around 66-67 gr., it will be still slow. Thatswhy I started with 68.0 gr and worked up in 1/2 grain increments up to 70.0gr. My QL velocity calculation correlate pretty well with LabRadar measurements. I still have some bullets so tomorrow will the story continue on the range. Thanks for your post. I've run the numbers in Berger's twist rate stability calculator, please, see yourself. Click on preview for bigger pics. [URL='https://ibb.co/VC8RKGg'][IMG]https://i.ibb.co/VC8RKGg/stability-1.jpg[/IMG][/URL] [URL='https://ibb.co/GC9N7ss'][IMG]https://i.ibb.co/GC9N7ss/stability-2.jpg[/IMG][/URL] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Not the first time... 7mm Rem Mag - issues with ELD-X 175gr.
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