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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
6mm rem or 6mmAI
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<blockquote data-quote="Trickymissfit" data-source="post: 451551" data-attributes="member: 25383"><p>CAD the case on a PC, and also CAD the standard case as well. Now expand the shoulders to where they cross in the neck. That's known as the vortex of the flame path, and is also the hottest and most intense point of the flame path. It should be in the first half of the case neck (closest to the shoulder). The standard neck is a good design, but the 40 degree is better yet. Take this into fact along with reduced brass flow; it then becomes a win win situation. This is why .243's eat barrel throats. Now the gist of my post was also using similar powders and similar chamber pressures. And I've also been an end user of four 6mm Remingtons in one form or another. I might add here that the 6/250AI barrel will not have 2/3rd's the barrel life that the 6mm Remington due to the neck length alone, but still should exceed 1200 rounds. But I suspect your thoughts relate more to excessive overbore than the Ackley case design. Thus relating to my thoughts on shorter shoulder deminsions that I have spoken of before. The perfect 6mm round is probably the HLS in an improved design.</p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 451551, member: 25383"] CAD the case on a PC, and also CAD the standard case as well. Now expand the shoulders to where they cross in the neck. That's known as the vortex of the flame path, and is also the hottest and most intense point of the flame path. It should be in the first half of the case neck (closest to the shoulder). The standard neck is a good design, but the 40 degree is better yet. Take this into fact along with reduced brass flow; it then becomes a win win situation. This is why .243's eat barrel throats. Now the gist of my post was also using similar powders and similar chamber pressures. And I've also been an end user of four 6mm Remingtons in one form or another. I might add here that the 6/250AI barrel will not have 2/3rd's the barrel life that the 6mm Remington due to the neck length alone, but still should exceed 1200 rounds. But I suspect your thoughts relate more to excessive overbore than the Ackley case design. Thus relating to my thoughts on shorter shoulder deminsions that I have spoken of before. The perfect 6mm round is probably the HLS in an improved design. gary [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
6mm rem or 6mmAI
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