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Rifles, Reloading, Optics, Equipment
Reloading
New IMR powders
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<blockquote data-quote="wildcat westerner" data-source="post: 1131765" data-attributes="member: 21361"><p>Hello,</p><p>I have hear very good things about these new IMR powders in terms of velocity gains and also copper fouling reduction. I have been told that a .300 WSM increase in velocity will place it in the 30-378 category with heavy hunting bullets.</p><p></p><p>Suddenly thse powders could seemingly resurrected a wildcat I designed. Many years ago I discovered that you could fill the magazine of a Savage rifle with four 9.3 x 64 RWS cases. These were large cases, without a belt, larger in diameter than .284 cases and 2.5 inches long. I designed a wildcat on this case necked to .30 caliber and had the base of the cases turned so they would fit a .30-06 bolt face. Dave Kiff helped in the design. Subsequently I found that this cartridge could nearly equal .300 Weatherby PUBLISHED ballistics. Pretty incredible in terms of the size differences in the cases. I noted the RWS brass was so tough it took three reloading to form these cases properly. As time went by I replaced my old cases with new RWS cases and found the cases were not made of the same materials in that I blew primers in loads four grains under my old maximums. The loss in velcoity was significant.</p><p>Now, with these new IMR powders I can see renewed life in my old wildcat. I would like to know has anyone done any testing with this newest. slowest of powders in a .30 caliber cartridge with aproximately 69-73 grains of powder with a 180 grain bullet?</p><p>Thank you for your attention in this matter.</p><p>Gene So</p></blockquote><p></p>
[QUOTE="wildcat westerner, post: 1131765, member: 21361"] Hello, I have hear very good things about these new IMR powders in terms of velocity gains and also copper fouling reduction. I have been told that a .300 WSM increase in velocity will place it in the 30-378 category with heavy hunting bullets. Suddenly thse powders could seemingly resurrected a wildcat I designed. Many years ago I discovered that you could fill the magazine of a Savage rifle with four 9.3 x 64 RWS cases. These were large cases, without a belt, larger in diameter than .284 cases and 2.5 inches long. I designed a wildcat on this case necked to .30 caliber and had the base of the cases turned so they would fit a .30-06 bolt face. Dave Kiff helped in the design. Subsequently I found that this cartridge could nearly equal .300 Weatherby PUBLISHED ballistics. Pretty incredible in terms of the size differences in the cases. I noted the RWS brass was so tough it took three reloading to form these cases properly. As time went by I replaced my old cases with new RWS cases and found the cases were not made of the same materials in that I blew primers in loads four grains under my old maximums. The loss in velcoity was significant. Now, with these new IMR powders I can see renewed life in my old wildcat. I would like to know has anyone done any testing with this newest. slowest of powders in a .30 caliber cartridge with aproximately 69-73 grains of powder with a 180 grain bullet? Thank you for your attention in this matter. Gene So [/QUOTE]
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New IMR powders
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