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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
375 RUM guys
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<blockquote data-quote="benchracer" data-source="post: 964196" data-attributes="member: 22069"><p>I ran some basic QL numbers and it looks like Ramshot Hunter is one of the better choices available for the RUM and 270 TSX (I ran the numbers with a 26" barrel). It looks like you could pick up about 50 fps or so with RL-22 or IMR 7828 SSC. Velocity drops off pretty quickly with powders slower/bulkier than those.</p><p> </p><p>If I knew your fired case capacity, barrel length, and the COAL you load to with the TSX, I could give you better numbers.</p><p> </p><p>I have done some initial testing with 350g SMK's and RL-22 in a .375 H&H, with promising results. I plan to try IMR 7828 SSC also. You have the case capacity to make those powders work with lighter bullets in your RUM. I have to go to faster powders if I back the bullet weight off.</p><p> </p><p>The reloading manuals all specify much faster powders for the .375's, even the larger cased ones. I consider that to be a reflection of the lack of long range type research in the larger bores.</p></blockquote><p></p>
[QUOTE="benchracer, post: 964196, member: 22069"] I ran some basic QL numbers and it looks like Ramshot Hunter is one of the better choices available for the RUM and 270 TSX (I ran the numbers with a 26" barrel). It looks like you could pick up about 50 fps or so with RL-22 or IMR 7828 SSC. Velocity drops off pretty quickly with powders slower/bulkier than those. If I knew your fired case capacity, barrel length, and the COAL you load to with the TSX, I could give you better numbers. I have done some initial testing with 350g SMK's and RL-22 in a .375 H&H, with promising results. I plan to try IMR 7828 SSC also. You have the case capacity to make those powders work with lighter bullets in your RUM. I have to go to faster powders if I back the bullet weight off. The reloading manuals all specify much faster powders for the .375's, even the larger cased ones. I consider that to be a reflection of the lack of long range type research in the larger bores. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
375 RUM guys
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