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Long Range Hunting & Shooting
6.5 PRC
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<blockquote data-quote="Alex Wheeler" data-source="post: 2482807" data-attributes="member: 101859"><p>Yes if there is a wind shift you will have a vertical component to account for. But its not much if the changes are small. Im talking about daily conditions, like pressure. You can have very little wind out there and still see large vertical poi changes day to day. But the bullet with more mass, so long as its in the ball park of BC will handle it better. And if we could see every condition out to 1k none of it would matter. We could account for it all. So when you go out on that day with zero mirage and its dead calm at the shooting position but you miss by 2 moa because of the wind you had no way of knowing was there, that big 300 grain bullet is going to help you more. Your seeing it in the 6.5 because those bullets are light enough its more obvious I suspect. Then you can get on the topic of bullets. We shoot 1000s of 6mm bullets in 1k BR. They are mostly 103-108 grain bullets and are all splitting hairs when it comes to BC. But there are some that will cut the wind and there are others that will shoot big when its windy. Some designs handle the wind far better that others and the only way to know which ones they are is to shoot them against everything else at the same time. It does take hundreds of targets and some years to see the pattern but its undeniable. The same would apply to other bullets it would just be hard to pick them out without them being shot side by side on paper on a regular basis like we have done with the 6mms.</p></blockquote><p></p>
[QUOTE="Alex Wheeler, post: 2482807, member: 101859"] Yes if there is a wind shift you will have a vertical component to account for. But its not much if the changes are small. Im talking about daily conditions, like pressure. You can have very little wind out there and still see large vertical poi changes day to day. But the bullet with more mass, so long as its in the ball park of BC will handle it better. And if we could see every condition out to 1k none of it would matter. We could account for it all. So when you go out on that day with zero mirage and its dead calm at the shooting position but you miss by 2 moa because of the wind you had no way of knowing was there, that big 300 grain bullet is going to help you more. Your seeing it in the 6.5 because those bullets are light enough its more obvious I suspect. Then you can get on the topic of bullets. We shoot 1000s of 6mm bullets in 1k BR. They are mostly 103-108 grain bullets and are all splitting hairs when it comes to BC. But there are some that will cut the wind and there are others that will shoot big when its windy. Some designs handle the wind far better that others and the only way to know which ones they are is to shoot them against everything else at the same time. It does take hundreds of targets and some years to see the pattern but its undeniable. The same would apply to other bullets it would just be hard to pick them out without them being shot side by side on paper on a regular basis like we have done with the 6mms. [/QUOTE]
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