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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
22 dasher 100 grain WildCats Pac-Nor 6.5 twist
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<blockquote data-quote="brianwinzor" data-source="post: 98793" data-attributes="member: 1067"><p>RM, I agree with Kirby's comments, and believe your 2800 fps with the 100 grain Wildcat is about the mark. </p><p></p><p>I believe that it is unlikely that you will exceed that velocity significantly, as your load of Ramshot Magnum is a achieving maximum pressure with a 100% loading density.</p><p></p><p>My 22/250AI has a capacity of 49.2 grains, and recently achieved 2,951 fps with the 100 grain Wildcat ULD, and 3,176 fps with the 90 grain Sierra MK. This was achieved in a Shilen 24.5 inch barrel with 1 in 10 twist, and obviously the bullets did not stabilise.</p><p></p><p>To compare your results to mine, if I added another 3.5 inches of barrel length to my rifle to equalise our barrel lengths, it should produce another 75 fps, which would bring my velocity to about 3025 fps. This represents a difference of about 225 fps between the 22 Dasher and the 22/250AI, and is about what I would expect considering the relative case capacities.</p><p></p><p>I believe the relevance of case capacity when using the heavier bullets has been shown, when you compare my results with the .224 Clark in this barrel (25.25 inches then), which became about 24.5 inches after setting back and rechambering to the .22/250AI. </p><p></p><p>The .224 Clark achieved velocities between 3,850 and 3,930 with the 69 Grain Sierra MK, and 3,650 and 3,730 with the 80 grain Sierra MK. </p><p></p><p>The 22/250AI achieved velocities between 3,350 and 3,430 fps with the 69 grain Sierra MK, and 3,175 and 3,260 fps with the 80 grain Sierra MK. </p><p></p><p>My load data indicates that the 450 - 500 fps velocity advantage of the .224 Clark was achieved with the use of about 10.0 to 11.0 grains more of the same powder. </p><p></p><p>Hope that the above information is of some help. Brian.</p></blockquote><p></p>
[QUOTE="brianwinzor, post: 98793, member: 1067"] RM, I agree with Kirby's comments, and believe your 2800 fps with the 100 grain Wildcat is about the mark. I believe that it is unlikely that you will exceed that velocity significantly, as your load of Ramshot Magnum is a achieving maximum pressure with a 100% loading density. My 22/250AI has a capacity of 49.2 grains, and recently achieved 2,951 fps with the 100 grain Wildcat ULD, and 3,176 fps with the 90 grain Sierra MK. This was achieved in a Shilen 24.5 inch barrel with 1 in 10 twist, and obviously the bullets did not stabilise. To compare your results to mine, if I added another 3.5 inches of barrel length to my rifle to equalise our barrel lengths, it should produce another 75 fps, which would bring my velocity to about 3025 fps. This represents a difference of about 225 fps between the 22 Dasher and the 22/250AI, and is about what I would expect considering the relative case capacities. I believe the relevance of case capacity when using the heavier bullets has been shown, when you compare my results with the .224 Clark in this barrel (25.25 inches then), which became about 24.5 inches after setting back and rechambering to the .22/250AI. The .224 Clark achieved velocities between 3,850 and 3,930 with the 69 Grain Sierra MK, and 3,650 and 3,730 with the 80 grain Sierra MK. The 22/250AI achieved velocities between 3,350 and 3,430 fps with the 69 grain Sierra MK, and 3,175 and 3,260 fps with the 80 grain Sierra MK. My load data indicates that the 450 - 500 fps velocity advantage of the .224 Clark was achieved with the use of about 10.0 to 11.0 grains more of the same powder. Hope that the above information is of some help. Brian. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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22 dasher 100 grain WildCats Pac-Nor 6.5 twist
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