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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.280 AI vs .284 Winchester AI...
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<blockquote data-quote="AZShooter" data-source="post: 449800" data-attributes="member: 5219"><p>You didn't mention the action length. SA dictates you use the 284. </p><p></p><p></p><p>Is this rifle going to be a repeater or single shot? I am asking because the 168 and 180 VLDs are quite long. If it is going to be a single shot it is no big deal. Otherwise the 280 AI may require a custom action to accomodate the length and still feed from the magazine. For optimal performance with either case you should consider a custom reamer. </p><p></p><p></p><p>There is an improved version of the 284 win called the 284 Shehane but technically it shouldn't be called an Ackley Improved. Bill Shehane designed the case's body-taper a bit larger about .010", but didn't change the shoulder angle from the original 35 degrees. It is supposed to add around 3.35 grains of powder. I have a friend who made one for long range shooting and said it wasn't worth the effort. FYI just by using RL-17 you can gain more velocity over the usual H4831 and 4350s. </p><p></p><p>As for the 280 AI I cannot tell you as much as I am not familiar with it. Perhaps someone else can add to this thread. </p><p></p><p>Here is a link for some reading about the various short action 7mms: </p><p></p><p><a href="http://www.6mmbr.com/7mm284.html" target="_blank">7mm Cartridge Guide</a></p></blockquote><p></p>
[QUOTE="AZShooter, post: 449800, member: 5219"] You didn't mention the action length. SA dictates you use the 284. Is this rifle going to be a repeater or single shot? I am asking because the 168 and 180 VLDs are quite long. If it is going to be a single shot it is no big deal. Otherwise the 280 AI may require a custom action to accomodate the length and still feed from the magazine. For optimal performance with either case you should consider a custom reamer. There is an improved version of the 284 win called the 284 Shehane but technically it shouldn't be called an Ackley Improved. Bill Shehane designed the case's body-taper a bit larger about .010", but didn't change the shoulder angle from the original 35 degrees. It is supposed to add around 3.35 grains of powder. I have a friend who made one for long range shooting and said it wasn't worth the effort. FYI just by using RL-17 you can gain more velocity over the usual H4831 and 4350s. As for the 280 AI I cannot tell you as much as I am not familiar with it. Perhaps someone else can add to this thread. Here is a link for some reading about the various short action 7mms: [url=http://www.6mmbr.com/7mm284.html]7mm Cartridge Guide[/url] [/QUOTE]
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.280 AI vs .284 Winchester AI...
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