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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="Fiftydriver" data-source="post: 36736" data-attributes="member: 10"><p>Remingtonman25_06,</p><p></p><p>The 257 AM would probably easliy reach the velocity goals you are looking at.</p><p></p><p>After testing the 257 STW with 100 gr bullets extensively, while they can be made to work well, they are finicky as hell and often the velocity E.S. are not the best, still they are plenty for big game hunting.</p><p></p><p>My current 257 STW will drive the 100 gr Wildcat Bonded Core FBHP to a solid 4000 fps and this bullet has a B.C. in the .480 range if you can believe it. Sighted +2" at 100 yards then land 6.5" low at 450 yards, thats pretty **** flat shooting.</p><p></p><p>The problem with my AM rounds is that they will be even ****ier with the light 100 gr bullets. The good thing is that the 115 gr pills should be able to be driven out of the AM just as fast as the 100 gr pills are out of the STW.</p><p></p><p>Like the STW though, the AM will really settle down with bullets of 130 and heavier. The STW turns into a ***** cat with the 130 gr bullet weight with velocity E.S. in the low teens.</p><p></p><p>This bullet has a B.C. of around .550 at 3500 fps and the AM will drive it to at least 3600 fps and I am expecting +3650 fps.</p><p></p><p>I personally do not like the 100 gr Swift A-Frame or the 100 gr XLC or TSX. In these rounds the Swift is just to sticky and will limit velocity to that of a 115 gr conventional bullet. The Barnes bullets are just to **** sensitive to pressure problems and in these cases, you really need to keep them off the lands by at least 0.050".</p><p></p><p>That said, I have two customers using the 115 gr TSX in rifles I have built that are 3/8" rifles.</p><p></p><p>On game performance with these two bullets is great but for my money, the Wildcat Bullets are a better, more accurate bullet at a lower price. </p><p></p><p>Plus, I am a heavy, long, high B.C. bullet kind of guy.</p><p></p><p>Good Shooting!!</p><p></p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 36736, member: 10"] Remingtonman25_06, The 257 AM would probably easliy reach the velocity goals you are looking at. After testing the 257 STW with 100 gr bullets extensively, while they can be made to work well, they are finicky as hell and often the velocity E.S. are not the best, still they are plenty for big game hunting. My current 257 STW will drive the 100 gr Wildcat Bonded Core FBHP to a solid 4000 fps and this bullet has a B.C. in the .480 range if you can believe it. Sighted +2" at 100 yards then land 6.5" low at 450 yards, thats pretty **** flat shooting. The problem with my AM rounds is that they will be even ****ier with the light 100 gr bullets. The good thing is that the 115 gr pills should be able to be driven out of the AM just as fast as the 100 gr pills are out of the STW. Like the STW though, the AM will really settle down with bullets of 130 and heavier. The STW turns into a ***** cat with the 130 gr bullet weight with velocity E.S. in the low teens. This bullet has a B.C. of around .550 at 3500 fps and the AM will drive it to at least 3600 fps and I am expecting +3650 fps. I personally do not like the 100 gr Swift A-Frame or the 100 gr XLC or TSX. In these rounds the Swift is just to sticky and will limit velocity to that of a 115 gr conventional bullet. The Barnes bullets are just to **** sensitive to pressure problems and in these cases, you really need to keep them off the lands by at least 0.050". That said, I have two customers using the 115 gr TSX in rifles I have built that are 3/8" rifles. On game performance with these two bullets is great but for my money, the Wildcat Bullets are a better, more accurate bullet at a lower price. Plus, I am a heavy, long, high B.C. bullet kind of guy. Good Shooting!! Kirby Allen(50) [/QUOTE]
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.257, 6.5mm and 270 Allen Mags, New Family or Rounds...
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