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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Ultimate 6mm
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<blockquote data-quote="Fiftydriver" data-source="post: 71774" data-attributes="member: 10"><p>Lerch,</p><p></p><p>For your listed 2800-3100 fps velocity range with the 90 to 115 gr bullets you really do not need that large of a round. I will be building a rifle here soon that was designed pretty much to those exact spec, 107 gr bullet loaded to 2800-2900 fps. </p><p></p><p>We decided to go with the 6mm-250 wildcat as it would easily reach these velocities with good consistant working pressures, brass is cheap and quality and barrel life would be very long with the Lilja 3 groove barrel.</p><p></p><p>The larger 6mm rounds would certianly offer higher performance levels, I have built several 6mm-284s, 6mm-06s, and even teh 6mm-06 AIs but all really have more HP then needed for todays match bullets. With the stouter jackets or custom bullets they can be used to full effect but for the performance goals you list, there is no need for the dramatically shortened barrel life.</p><p></p><p>Another great option would be the 243 AI as it has a bit more power then the 6mm-250, better case design then the standard 243 but still offer very low recoil and great barrel life. These are the size ranges I would consider perfect for your velocity goals and bullet weights.</p><p></p><p>Good Shooting!!</p><p></p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 71774, member: 10"] Lerch, For your listed 2800-3100 fps velocity range with the 90 to 115 gr bullets you really do not need that large of a round. I will be building a rifle here soon that was designed pretty much to those exact spec, 107 gr bullet loaded to 2800-2900 fps. We decided to go with the 6mm-250 wildcat as it would easily reach these velocities with good consistant working pressures, brass is cheap and quality and barrel life would be very long with the Lilja 3 groove barrel. The larger 6mm rounds would certianly offer higher performance levels, I have built several 6mm-284s, 6mm-06s, and even teh 6mm-06 AIs but all really have more HP then needed for todays match bullets. With the stouter jackets or custom bullets they can be used to full effect but for the performance goals you list, there is no need for the dramatically shortened barrel life. Another great option would be the 243 AI as it has a bit more power then the 6mm-250, better case design then the standard 243 but still offer very low recoil and great barrel life. These are the size ranges I would consider perfect for your velocity goals and bullet weights. Good Shooting!! Kirby Allen(50) [/QUOTE]
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Ultimate 6mm
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