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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bullet choices for 300 RUM
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<blockquote data-quote="Jon A" data-source="post: 336937" data-attributes="member: 319"><p>At least you included the operative word. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /> Seriously, a drop test at 960 yds with a LapuaImp to measure BC is like measuring the width of a human hair with a yardstick. </p><p></p><p>The BC could be a full .100 off and there'd only be a little over three inches difference in trajectory. Depending upon what scope was used the clicks could easily be off that much or more (how were they calibrated?) along with such a small change getting lost in the noise of the rifle's accuracy or atmospheric condition measurements. At .308 velocities measurements at such a range mean a little more; RUM or LapuaImp velocities will cover for the BC of the bullet at such short ranges to a large extent. If you want to use drop, at 1500 you're around 20" drop difference for a .1 BC difference so it's starting to get noticeable. Of course you still need to make sure the scope's clicks are calibrated exactly, etc.</p><p></p><p>Don't get me wrong, I'm not saying it's a bad bullet or its BC is as low as the 173's--hopefully it's not. I'm just saying that such bold claims that "nothing else can touch it," etc, would take some serious data to back up which you don't have. The claims sound like they're straight from Gerard's advertising copy which have historically been prone to large exaggeration--and when they go against the basic laws of ballistics...well, you've heard the phrase "If something sounds too good to be true...."</p><p></p><p>I didn't test any of Noel's bullets. That's my fault, I just got busy doing other things then after a bunch of shooting concluded my barrel was pretty much shot out so even if they did stabilize I wouldn't be able to correctly assess their accuracy.</p></blockquote><p></p>
[QUOTE="Jon A, post: 336937, member: 319"] At least you included the operative word. ;) Seriously, a drop test at 960 yds with a LapuaImp to measure BC is like measuring the width of a human hair with a yardstick. The BC could be a full .100 off and there'd only be a little over three inches difference in trajectory. Depending upon what scope was used the clicks could easily be off that much or more (how were they calibrated?) along with such a small change getting lost in the noise of the rifle's accuracy or atmospheric condition measurements. At .308 velocities measurements at such a range mean a little more; RUM or LapuaImp velocities will cover for the BC of the bullet at such short ranges to a large extent. If you want to use drop, at 1500 you're around 20" drop difference for a .1 BC difference so it's starting to get noticeable. Of course you still need to make sure the scope's clicks are calibrated exactly, etc. Don't get me wrong, I'm not saying it's a bad bullet or its BC is as low as the 173's--hopefully it's not. I'm just saying that such bold claims that "nothing else can touch it," etc, would take some serious data to back up which you don't have. The claims sound like they're straight from Gerard's advertising copy which have historically been prone to large exaggeration--and when they go against the basic laws of ballistics...well, you've heard the phrase "If something sounds too good to be true...." I didn't test any of Noel's bullets. That's my fault, I just got busy doing other things then after a bunch of shooting concluded my barrel was pretty much shot out so even if they did stabilize I wouldn't be able to correctly assess their accuracy. [/QUOTE]
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Bullet choices for 300 RUM
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