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Rifles, Reloading, Optics, Equipment
Reloading
.375 H&H Fireform to .375 WBY?
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<blockquote data-quote="Kennibear" data-source="post: 901161" data-attributes="member: 51650"><p>MagnumManiac</p><p></p><p>I am surprised that with ADI producing most of the world's civilian supply of tubular powder that you Down Under don't have an excellent selection available.</p><p></p><p>Alliant has produced a slug of new offerings and I cannot find data on most of them. there is limited data for 300 MP and my son and I load for 357 & 44 magnums. it is ideal because it does not require magnum primers. They have a CFE 223 equivalent that has no data either and I wonder if it is as insensitive to temp as CFE.</p><p></p><p>My initial attempt at 300gr slugs from the 375 Ruger did not yield more than 2650 fps but none of the loads was anywhere near maximum pressure. Some of them did not register on the Pressure Trace II! All were not less than one grain under max in the books as the Data Manuals list loads safe for all bullets of the same weight/ maker. Straight sided round nose bullets generate pressures at much lower load levels than the sleeker SpBT offerings. The NRA tested this extensively in the '60s.</p><p></p><p>Keep checking Alliant's website as loads are appearing there for powders they have offered for sometime without proper data.</p><p></p><p>Good shooting!</p><p></p><p>KB</p></blockquote><p></p>
[QUOTE="Kennibear, post: 901161, member: 51650"] MagnumManiac I am surprised that with ADI producing most of the world's civilian supply of tubular powder that you Down Under don't have an excellent selection available. Alliant has produced a slug of new offerings and I cannot find data on most of them. there is limited data for 300 MP and my son and I load for 357 & 44 magnums. it is ideal because it does not require magnum primers. They have a CFE 223 equivalent that has no data either and I wonder if it is as insensitive to temp as CFE. My initial attempt at 300gr slugs from the 375 Ruger did not yield more than 2650 fps but none of the loads was anywhere near maximum pressure. Some of them did not register on the Pressure Trace II! All were not less than one grain under max in the books as the Data Manuals list loads safe for all bullets of the same weight/ maker. Straight sided round nose bullets generate pressures at much lower load levels than the sleeker SpBT offerings. The NRA tested this extensively in the '60s. Keep checking Alliant's website as loads are appearing there for powders they have offered for sometime without proper data. Good shooting! KB [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
.375 H&H Fireform to .375 WBY?
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