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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
New GSC 338 LRH bullets.
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<blockquote data-quote="Gerard Schultz" data-source="post: 1046670" data-attributes="member: 51"><p>Mr Litz (Seeing that we have gone all formal <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> )</p><p></p><p> This is easy to do then: Shoot our 232gr 338 SP bullet in a standard twist 338 (1:10) and see if your measured BC goes up or down.</p><p></p><p> That is because you are using the incorrect twist rates and 'average' our BC numbers. Use the numbers as I clearly direct and you will find that they are as close as you can get without shooting actual drop tables.</p><p></p><p>For example: </p><p> With the BC numbers and speeds we give, to properly reference ballistics calculating software, the bullet will spend approximately 0.9065 of a second to get from 3000fps to 2125fps. That is halfway to 1200fps. It then spends another 1.6409 seconds to go the other half, from 2125fps to 1200fps. This is why we say on our website that our BC numbers cannot be used to compare BC numbers to those given by other manufacturers. Above all, the three BC numbers we give cannot be averaged because the result makes no sense. The BC numbers are only given so that software can be dialed in as a starting point.</p><p></p><p>We tested the 232gr bullet in a 338LM out to 1600m and found that it went subsonic between 1400m and 1500m. This compares very well with the BC numbers on our website but we used them as intended. Incidentally, the 232gr bullet (338232SP) is still <a href="http://www.gsgroup.co.za/338232SP150.html" target="_blank"><span style="color: Blue">on the old data format</span></a>. We are gradually changing to <a href="http://www.gscustomusa.com/510910SP307.html" target="_blank"><span style="color: Blue">a new format</span></a> which is clearer in the information given. Note that we do not 'advertise' BC numbers to gain sales as some other manufacturers do. We simply state the calculated fact.</p><p></p><p> I considered that and found that G7 tables did not fit the profile of GSC copper monometal bullets and was not accurate enough.</p></blockquote><p></p>
[QUOTE="Gerard Schultz, post: 1046670, member: 51"] Mr Litz (Seeing that we have gone all formal :) ) This is easy to do then: Shoot our 232gr 338 SP bullet in a standard twist 338 (1:10) and see if your measured BC goes up or down. That is because you are using the incorrect twist rates and 'average' our BC numbers. Use the numbers as I clearly direct and you will find that they are as close as you can get without shooting actual drop tables. For example: With the BC numbers and speeds we give, to properly reference ballistics calculating software, the bullet will spend approximately 0.9065 of a second to get from 3000fps to 2125fps. That is halfway to 1200fps. It then spends another 1.6409 seconds to go the other half, from 2125fps to 1200fps. This is why we say on our website that our BC numbers cannot be used to compare BC numbers to those given by other manufacturers. Above all, the three BC numbers we give cannot be averaged because the result makes no sense. The BC numbers are only given so that software can be dialed in as a starting point. We tested the 232gr bullet in a 338LM out to 1600m and found that it went subsonic between 1400m and 1500m. This compares very well with the BC numbers on our website but we used them as intended. Incidentally, the 232gr bullet (338232SP) is still [URL="http://www.gsgroup.co.za/338232SP150.html"][COLOR="Blue"]on the old data format[/COLOR][/URL]. We are gradually changing to [URL="http://www.gscustomusa.com/510910SP307.html"][COLOR="Blue"]a new format[/COLOR][/URL] which is clearer in the information given. Note that we do not 'advertise' BC numbers to gain sales as some other manufacturers do. We simply state the calculated fact. I considered that and found that G7 tables did not fit the profile of GSC copper monometal bullets and was not accurate enough. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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New GSC 338 LRH bullets.
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