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Rifles, Reloading, Optics, Equipment
Reloading
Finding starting loads for wildcats
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<blockquote data-quote="Equalizer" data-source="post: 2329276" data-attributes="member: 111343"><p>How does one choose a start load on a wildcat cartridge? I've heard of the Powely computer but never seen one…</p><p></p><p>I have a 358 Hoosier (358 Winchester shortened to 1.8") and I have a great accuracy load but when I ran it over the magnetospeed it only clocked in at 2330 fps…. I'm using 36.3 Gr of IMR 4198 over a 180 Gr Barnes TTSX, Hornady 358 Win brass trimmed to 1.8" F210. Shilen 22" barrel. </p><p></p><p>When I look at regular 358 Winchester load data I'm seeing IMR 4064, Varget, Tac and other powders that I have not seen data for in the Hoosier. Do I start 10% below the starting load for the 358 Winchester? </p><p></p><p>The guy who commercialized the Hoosier said it would almost duplicate the 358 Winchester (180 Gr @ 2600 fps) </p><p></p><p>After this deer season I'm going to work up to my rifles max with my recipe but wanted to have the option of different powders and projectiles and an idea of where I'm close to topping out with IMR 4198.</p></blockquote><p></p>
[QUOTE="Equalizer, post: 2329276, member: 111343"] How does one choose a start load on a wildcat cartridge? I’ve heard of the Powely computer but never seen one… I have a 358 Hoosier (358 Winchester shortened to 1.8”) and I have a great accuracy load but when I ran it over the magnetospeed it only clocked in at 2330 fps…. I’m using 36.3 Gr of IMR 4198 over a 180 Gr Barnes TTSX, Hornady 358 Win brass trimmed to 1.8” F210. Shilen 22” barrel. When I look at regular 358 Winchester load data I’m seeing IMR 4064, Varget, Tac and other powders that I have not seen data for in the Hoosier. Do I start 10% below the starting load for the 358 Winchester? The guy who commercialized the Hoosier said it would almost duplicate the 358 Winchester (180 Gr @ 2600 fps) After this deer season I’m going to work up to my rifles max with my recipe but wanted to have the option of different powders and projectiles and an idea of where I’m close to topping out with IMR 4198. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Finding starting loads for wildcats
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