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Rifles, Reloading, Optics, Equipment
Reloading
GUESS WHAT!
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<blockquote data-quote="QuietTexan" data-source="post: 2487392" data-attributes="member: 116181"><p>Something that doesn't make a difference at 300 yards can make an outsized difference at a mile. </p><p></p><p>If you take a 13 twist 6PPC shooting a 65gn bullet that makes one hole at 300 yards and shoot it at 1000, what happens?</p><p></p><p>If you take the same 6PPC case and put an 8 twist on it to shoot 105gns at 1000 yards, what does the 300 yard hole look like?</p><p></p><p>If you shoot either of those to 1760 yards, what happens?</p><p></p><p>Short to mid/long range (whatever you want to call out to 1,000 yards), barrel harmonics and tuning and all the benchrester stuff is important, ES could easily be 100+ FPS and it doesn't matter at all. The short range benchrest guys tune their loads using what I swear is magic on their little mobile reloading setups and make smaller holes than I could poke with a pencil. But they also use so many wind flags the range looks ridiculous, not all that practical for other uses.</p><p></p><p>Extended long range, extreme long range, ultra long range, whatever you want to call 1000 yard+/ mile+ shooting, things like ES can take on an outsized importance compared to other factors. BC basically does not matter at 100 yards, but at 2000 yards one bullet varying from another can be the difference between a hit and a miss, combine that with being a grain or two of of charge weight and you have a compounded error.</p><p></p><p>I build loads differently for short range and long range - mainly different components but also by accepting different levels of statistical metrics and on-target group sizes. I use the V4 for almost all of it because it's what I have, but that doesn't mean a volumetric wouldn't work just as well/better on the short end of the spectrum. On the long end though, that kernel or two might matter a lot.</p></blockquote><p></p>
[QUOTE="QuietTexan, post: 2487392, member: 116181"] Something that doesn't make a difference at 300 yards can make an outsized difference at a mile. If you take a 13 twist 6PPC shooting a 65gn bullet that makes one hole at 300 yards and shoot it at 1000, what happens? If you take the same 6PPC case and put an 8 twist on it to shoot 105gns at 1000 yards, what does the 300 yard hole look like? If you shoot either of those to 1760 yards, what happens? Short to mid/long range (whatever you want to call out to 1,000 yards), barrel harmonics and tuning and all the benchrester stuff is important, ES could easily be 100+ FPS and it doesn't matter at all. The short range benchrest guys tune their loads using what I swear is magic on their little mobile reloading setups and make smaller holes than I could poke with a pencil. But they also use so many wind flags the range looks ridiculous, not all that practical for other uses. Extended long range, extreme long range, ultra long range, whatever you want to call 1000 yard+/ mile+ shooting, things like ES can take on an outsized importance compared to other factors. BC basically does not matter at 100 yards, but at 2000 yards one bullet varying from another can be the difference between a hit and a miss, combine that with being a grain or two of of charge weight and you have a compounded error. I build loads differently for short range and long range - mainly different components but also by accepting different levels of statistical metrics and on-target group sizes. I use the V4 for almost all of it because it's what I have, but that doesn't mean a volumetric wouldn't work just as well/better on the short end of the spectrum. On the long end though, that kernel or two might matter a lot. [/QUOTE]
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