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Hunting
Long Range Hunting & Shooting
338 (norma) build question
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<blockquote data-quote="codyadams" data-source="post: 1907300" data-attributes="member: 87243"><p>If it is an AI chamber then you will loose some velocity shooting factory ammo vs a standard chamber. It will use some of the energy to expand the case. Likely not more than 50 fps, but some. And if you will not be reloading, and only shooting factory, then there is no advantage to the AI. He meant that the lightest contour carbon is still heavier than a heavy sporter type barrel he has. With a .338 bore, my #5 fluted barrel is the same weight as a proof sendero light would be. A #4 would be even lighter yet. I went with a #5 because that is the smallest contour that would support 5/8x24 threading, which I personally feel is the minimum for a .338 bore.</p></blockquote><p></p>
[QUOTE="codyadams, post: 1907300, member: 87243"] If it is an AI chamber then you will loose some velocity shooting factory ammo vs a standard chamber. It will use some of the energy to expand the case. Likely not more than 50 fps, but some. And if you will not be reloading, and only shooting factory, then there is no advantage to the AI. He meant that the lightest contour carbon is still heavier than a heavy sporter type barrel he has. With a .338 bore, my #5 fluted barrel is the same weight as a proof sendero light would be. A #4 would be even lighter yet. I went with a #5 because that is the smallest contour that would support 5/8x24 threading, which I personally feel is the minimum for a .338 bore. [/QUOTE]
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338 (norma) build question
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