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Rifles, Reloading, Optics, Equipment
Reloading
New IMR powders
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<blockquote data-quote="Varmint Hunter" data-source="post: 1141871" data-attributes="member: 313"><p>Certainly doesn't seem possible to boost a 300WSM to 30-378Wby ballistics with a powder change. The new powders don't even claim to be velocity boosters.</p><p></p><p>Here is my limited experience with a new IMR powder:</p><p></p><p>I've been working with 7977 and 175gr bullets in the 7WSM. I get speeds no greater then obtainable with IMR 7828 or H1000 but accuracy is coming together with load development. I'm happy enough to get an accurate load with reduced copper fouling and is temperature stable to boot.</p><p></p><p>Either way - good luck. Sometimes modern advancements come from unexpected places.</p></blockquote><p></p>
[QUOTE="Varmint Hunter, post: 1141871, member: 313"] Certainly doesn't seem possible to boost a 300WSM to 30-378Wby ballistics with a powder change. The new powders don't even claim to be velocity boosters. Here is my limited experience with a new IMR powder: I've been working with 7977 and 175gr bullets in the 7WSM. I get speeds no greater then obtainable with IMR 7828 or H1000 but accuracy is coming together with load development. I'm happy enough to get an accurate load with reduced copper fouling and is temperature stable to boot. Either way - good luck. Sometimes modern advancements come from unexpected places. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
New IMR powders
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