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Hunting
Long Range Hunting & Shooting
200 yd group
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<blockquote data-quote="brant89" data-source="post: 1082399" data-attributes="member: 49553"><p>I would agree that the custom tube on my 260AI produces much better ES than the factory one on the 223, but the 223 will shoot slightly smaller groups at 200 than the 260AI (both will produce 1/2MOA or better at 200 if the driver does his part). Back the target up and the groups on the 223 will start to open up and the 260AI continues to perform beautifully (most likely due to the difference in ES), so I guess that would be in agreement with your statement.</p><p></p><p>I have been thinking lately that it makes sense for a cartridge with larger case capacity to produce smaller ES (up to a certain point). It seems intuitive since a 0.1gr in a .223 can make a significant difference in accuracy and velocity but 0.1gr in a 260 isn't even noticeable most of the time. Is this correct or am I missing something?</p><p></p><p>PS: This is not to say it is ok to be sloppy in your reloading if you have large case capacity, I still measure every charge on a beam scale to be as consistent as possible with all cartridges, I'm just curious to know if this theory holds water or not. Maybe some BR shooters might have some input here.</p></blockquote><p></p>
[QUOTE="brant89, post: 1082399, member: 49553"] I would agree that the custom tube on my 260AI produces much better ES than the factory one on the 223, but the 223 will shoot slightly smaller groups at 200 than the 260AI (both will produce 1/2MOA or better at 200 if the driver does his part). Back the target up and the groups on the 223 will start to open up and the 260AI continues to perform beautifully (most likely due to the difference in ES), so I guess that would be in agreement with your statement. I have been thinking lately that it makes sense for a cartridge with larger case capacity to produce smaller ES (up to a certain point). It seems intuitive since a 0.1gr in a .223 can make a significant difference in accuracy and velocity but 0.1gr in a 260 isn't even noticeable most of the time. Is this correct or am I missing something? PS: This is not to say it is ok to be sloppy in your reloading if you have large case capacity, I still measure every charge on a beam scale to be as consistent as possible with all cartridges, I'm just curious to know if this theory holds water or not. Maybe some BR shooters might have some input here. [/QUOTE]
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