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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
For your viewing pleasure here’s the 137 Hammer Hunter out of a 300 RUM
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<blockquote data-quote="tim_w" data-source="post: 2621284" data-attributes="member: 11132"><p>Are you able to pressure out the load with N560? Any room left for more powder? If so maybe go the other direction to N565. Unless you can not pressure out and run out of space I can not see N555 working better as not only is it faster but less dense and lower energy. Could be wrong though as I have never tried your combo.</p><p></p><p>N555 @ 900g /3700j</p><p>N560 @ 960g/4000j</p><p>N565 @ 960g/4000j</p><p></p><p>If you have more room and can pressure out N560 I would choose to try N565. It splits N560/N570 in burn rate. Has the same density & energy as N560. It has one step slower burn rate splitting N560/N570 slightly favoring N570. Bump neck tension ½ a thou to speed up the peak faster might dial it in if needed.</p><p></p><p>My thought on N555 is if you are not able to pressure out N560 then N555 could be a good choice.</p><p></p><p>I love Vihtavuori powders, both HE and single base. Usually, with a few exceptions, they're the first powders I go for as long as I can find it (rifle and handgun).</p><p></p><p>Kind of amusing looking for more vel running @3500/20"... lol chasing the dragon tail. I am just as guilty. About to see how much I can get out of a 175HH from a 21.5" 33 S.Max, 3400-3500fps range is the hope.</p></blockquote><p></p>
[QUOTE="tim_w, post: 2621284, member: 11132"] Are you able to pressure out the load with N560? Any room left for more powder? If so maybe go the other direction to N565. Unless you can not pressure out and run out of space I can not see N555 working better as not only is it faster but less dense and lower energy. Could be wrong though as I have never tried your combo. N555 @ 900g /3700j N560 @ 960g/4000j N565 @ 960g/4000j If you have more room and can pressure out N560 I would choose to try N565. It splits N560/N570 in burn rate. Has the same density & energy as N560. It has one step slower burn rate splitting N560/N570 slightly favoring N570. Bump neck tension ½ a thou to speed up the peak faster might dial it in if needed. My thought on N555 is if you are not able to pressure out N560 then N555 could be a good choice. I love Vihtavuori powders, both HE and single base. Usually, with a few exceptions, they're the first powders I go for as long as I can find it (rifle and handgun). Kind of amusing looking for more vel running @3500/20"... lol chasing the dragon tail. I am just as guilty. About to see how much I can get out of a 175HH from a 21.5" 33 S.Max, 3400-3500fps range is the hope. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
For your viewing pleasure here’s the 137 Hammer Hunter out of a 300 RUM
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