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Rifles, Reloading, Optics, Equipment
Reloading
Who has a 6.5mm - 300 Win Mag? Need Pet load data.
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<blockquote data-quote="Wookie316" data-source="post: 335147" data-attributes="member: 18820"><p>My fear with a faster powder is I won't produce the speed. This rifle started life as a 264 WM. My max charge of RL22 with a 140gr was 59gr which put me just under 3000 FPS.</p><p></p><p>After finally coming to the conclusion that this rifle was only going to run the 140gr bullets in the 2950 - 3000 FPS range at safe pressures (even with H870 which I don't understand why?). I decided to have it opened up to the 6.5 - 300 WM.</p><p></p><p>Thinking it was a build problem, my gunsmith pulled the barrel to confirm there was nothing wrong with the build which turned out to be the case. He also had the 6.5 - 300 WM reamer & this wildcat is a simple neck size which doesn't require any major fire forming, I figured I'd open it up to get some more speed out of it. Plus he cut me a great deal on the re - chamber job.</p><p></p><p>I owned a 264 WM before this one that would easily run 3200 FPS with 140's & a 74.5gr charge of H870. That was my goal with this new one, such was not the case. Sold the old 264 rifle because it had a Magna Port & I hated the noise. To chop the barrel down on that one would have left me around 23"'s to boot which I wasn't excited about. That Magna Ported barrel copper fouled something fierce but it did shoot good.</p><p></p><p>I am sure a 6.5 - 300 WM will be capable of more than 3200 FPS, but I will be very happy with an accurate 3150 - 3200 140gr & no pressure issues.</p><p></p><p>A guy who has one was what turned me on to the cartridge. He says he can go 3300 FPS with a 140gr in a 24" barrel & a charge of US869, but his best accuracy is with Retumbo in the 3150 -3200 Range. Bingo, that's what I am looking for. Didn't like the 6.5mm STW because of the length & the fact I'd have to seat the bullet deeper than I like. With a 300 WM parent case I can seat the bullet out to 3.550 COL & still fit nice in my 3.600 Mag box.</p><p></p><p>Still frustrated the 264 WM let me down when 3150-3200 should of been a snap for it. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite3" alt=":(" title="Frown :(" loading="lazy" data-shortname=":(" /></p><p></p><p> ________________</p></blockquote><p></p>
[QUOTE="Wookie316, post: 335147, member: 18820"] My fear with a faster powder is I won't produce the speed. This rifle started life as a 264 WM. My max charge of RL22 with a 140gr was 59gr which put me just under 3000 FPS. After finally coming to the conclusion that this rifle was only going to run the 140gr bullets in the 2950 - 3000 FPS range at safe pressures (even with H870 which I don't understand why?). I decided to have it opened up to the 6.5 - 300 WM. Thinking it was a build problem, my gunsmith pulled the barrel to confirm there was nothing wrong with the build which turned out to be the case. He also had the 6.5 - 300 WM reamer & this wildcat is a simple neck size which doesn't require any major fire forming, I figured I'd open it up to get some more speed out of it. Plus he cut me a great deal on the re - chamber job. I owned a 264 WM before this one that would easily run 3200 FPS with 140's & a 74.5gr charge of H870. That was my goal with this new one, such was not the case. Sold the old 264 rifle because it had a Magna Port & I hated the noise. To chop the barrel down on that one would have left me around 23"'s to boot which I wasn't excited about. That Magna Ported barrel copper fouled something fierce but it did shoot good. I am sure a 6.5 - 300 WM will be capable of more than 3200 FPS, but I will be very happy with an accurate 3150 - 3200 140gr & no pressure issues. A guy who has one was what turned me on to the cartridge. He says he can go 3300 FPS with a 140gr in a 24" barrel & a charge of US869, but his best accuracy is with Retumbo in the 3150 -3200 Range. Bingo, that's what I am looking for. Didn't like the 6.5mm STW because of the length & the fact I'd have to seat the bullet deeper than I like. With a 300 WM parent case I can seat the bullet out to 3.550 COL & still fit nice in my 3.600 Mag box. Still frustrated the 264 WM let me down when 3150-3200 should of been a snap for it. :( ________________ [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Who has a 6.5mm - 300 Win Mag? Need Pet load data.
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