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Rifles, Reloading, Optics, Equipment
Reloading
Data on 257 stw
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<blockquote data-quote="Fiftydriver" data-source="post: 83228" data-attributes="member: 10"><p>As with 257Speed I would recommend you go away from the stock powders for the 257 STW. I have built alot of these rifles for customers and all have performed exceptionally well with most loads from 100 gr up to 130 gr bullets but with the slower ball powders such as Ramshots magnum already mentioned, they really settled down and were easy to load for.</p><p></p><p>Many get into situations where they are getting what they think are pressure signs but instead it is powder bridging issues. The slow ball powders give a very gradual, even pressure curve so its much easier to work up to a good top pressure load safely.</p><p></p><p>You will also loosen up many fewer primer pockets using the ball powders.</p><p></p><p>The Magnum I have used has been very similiar in burn rate to Retumbo and nearly as resistant to temp changes. Generally starting load levels for Rl-25 and Retumbo work very well with Magnum.</p><p></p><p>In my personal 257 STW rifle I found, like 257Speed that it really settled down with the heavier bullets. With the Wildcat Bullets 130 gr Bonded Core FBHP loaded to a solid 3450 fps in the 30" Lilja 1-10 barrel it was a dream to shoot with groups averaging well under 2" at 500 yards.</p><p></p><p>It is also very accurate with the 100 gr bullets, especially the 100 gr BCFBHP wildcat loaded to 3950 fps. Still at the 500 yard line the 130 gr pill had a distinct edge in accuracy.</p><p></p><p>Much better performance on deer size game as well.</p><p></p><p>Good Shooting!!</p><p></p><p>Kirby Allen(50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 83228, member: 10"] As with 257Speed I would recommend you go away from the stock powders for the 257 STW. I have built alot of these rifles for customers and all have performed exceptionally well with most loads from 100 gr up to 130 gr bullets but with the slower ball powders such as Ramshots magnum already mentioned, they really settled down and were easy to load for. Many get into situations where they are getting what they think are pressure signs but instead it is powder bridging issues. The slow ball powders give a very gradual, even pressure curve so its much easier to work up to a good top pressure load safely. You will also loosen up many fewer primer pockets using the ball powders. The Magnum I have used has been very similiar in burn rate to Retumbo and nearly as resistant to temp changes. Generally starting load levels for Rl-25 and Retumbo work very well with Magnum. In my personal 257 STW rifle I found, like 257Speed that it really settled down with the heavier bullets. With the Wildcat Bullets 130 gr Bonded Core FBHP loaded to a solid 3450 fps in the 30" Lilja 1-10 barrel it was a dream to shoot with groups averaging well under 2" at 500 yards. It is also very accurate with the 100 gr bullets, especially the 100 gr BCFBHP wildcat loaded to 3950 fps. Still at the 500 yard line the 130 gr pill had a distinct edge in accuracy. Much better performance on deer size game as well. Good Shooting!! Kirby Allen(50) [/QUOTE]
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Data on 257 stw
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