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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.257, 6.5mm and 270 Allen Mags, New Family or Rounds...
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<blockquote data-quote="Mysticplayer" data-source="post: 36739" data-attributes="member: 8947"><p>Well Kirby, that is way too much fun. I have heard that using the STW case, many were running into problems in the 25 and 6.5 cals. Probably using bullets on the light side and not getting the right powder burn/pressure. Using the super heavies is the way to go.</p><p></p><p>I have a very soft spot for the 6.5 and the 6.5AM sounds like a winner. I wonder if the MK/Lapua's are going to like going that fast? Most soft shell match bullets tend to distort over 3100fps. Going 3500fps might just blow them up.</p><p></p><p>I would suggest the 140gr SST in a 9 twist. I doubt they will blow up and getting these 500fps faster then where I am is just way too much fun. Easily a 800 to 900yd hammer.</p><p></p><p>These wildcats could use much cheaper bullets but still offer similar on game terminal performance at long range. They might just be better in the wind too due to such short transit time. </p><p></p><p>Only area undetermined would be the powder to use and the actual case capacity with the bullet of choice. The best slow powder I know of is H50BMG. If that will not load to near 100% load density, ES numbers might not be too favorable.</p><p></p><p>I guess you could look at wet sawdust as a duplex load.</p><p></p><p>These are not overbore cartridges!!! Just barrel life challenged <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> A 220Swift for big game. Roy Weatherby would be proud...</p><p></p><p>Jerry</p></blockquote><p></p>
[QUOTE="Mysticplayer, post: 36739, member: 8947"] Well Kirby, that is way too much fun. I have heard that using the STW case, many were running into problems in the 25 and 6.5 cals. Probably using bullets on the light side and not getting the right powder burn/pressure. Using the super heavies is the way to go. I have a very soft spot for the 6.5 and the 6.5AM sounds like a winner. I wonder if the MK/Lapua's are going to like going that fast? Most soft shell match bullets tend to distort over 3100fps. Going 3500fps might just blow them up. I would suggest the 140gr SST in a 9 twist. I doubt they will blow up and getting these 500fps faster then where I am is just way too much fun. Easily a 800 to 900yd hammer. These wildcats could use much cheaper bullets but still offer similar on game terminal performance at long range. They might just be better in the wind too due to such short transit time. Only area undetermined would be the powder to use and the actual case capacity with the bullet of choice. The best slow powder I know of is H50BMG. If that will not load to near 100% load density, ES numbers might not be too favorable. I guess you could look at wet sawdust as a duplex load. These are not overbore cartridges!!! Just barrel life challenged :-) A 220Swift for big game. Roy Weatherby would be proud... Jerry [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.257, 6.5mm and 270 Allen Mags, New Family or Rounds...
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