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25/300WSM Load Data
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Anybody have any data using MagPro or IMR4831? I've been working with RL22 but would like to try some others. Working with 100gr Partitions and 110 Accubonds mainly.

Thanks!


I like blowin' big holes in stuff...
 
Posts: 49 | Location: E. TN | Registered: 25 February 2003Reply With Quote
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*I* started with 270WSM loads, backed down 10%... which, btw, is easier to form brass from for a 257JLS.


opinions vary band of bubbas and STC hunting Club

Information on Ammoguide about
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What is an AR round? Case Drawings 416-458-470AR and 500AR.
476AR,
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Posts: 40036 | Location: Conroe, TX | Registered: 01 June 2002Reply With Quote
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So, a 130 or 140gr 270WSM load would ROUGHLY equate to a 100 or 110gr 25WSM load (minus 10% for starting loads). I was kinda thinking along that line but wasn't sure. This is my first wildcat and I'm probably being overly cautious but I'd rather not blow anything up! Then again, I don't want to get a load that is too low. That can cause it's own problems from what I've read... Thanks for the input!


I like blowin' big holes in stuff...
 
Posts: 49 | Location: E. TN | Registered: 25 February 2003Reply With Quote
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For a .300 WSM necked down to .25 caliber, I would think Magpro might even be a little fast. Maybe you should consider Reloder 25, H-1000 or Vihtavuori N-170. While you could load IMR-4831, my bet is it wouldn't give you top velocity. I would probably look up .257 Weatherby loads, reduce by 10% and carefully work up.


Bullets are pretty worthless. All they do is hang around waiting to get loaded.
 
Posts: 515 | Location: kennewick, wa | Registered: 18 May 2004Reply With Quote
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