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445 SuperMag Load Data
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Jody
Salem, Virginia
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May 23, 2008 - 7:35 am
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445 Supermag, all bullet weights
Bullet Powder Weight Powder Velocity OAL Primer Source
180gr JHP 42.0 gr 1680 1,994 fps 1.95″ Fed 155 Accurate
Suggested starting load: 37.8 gr
200gr JHP 40.0 gr 1680 1,921 fps 1.92″ Fed 155 Accurate
Suggested starting load: 36.0 gr
240gr JHP 37.5 gr 1680 1,806 fps 1.925″ Fed 155 Accurate
Suggested starting load: 33.8 gr
240gr JSP 30.0 gr h-110 Unknown 1.955″ Fed LRM guest

Admin Note: Well under Hodgdons max of 33.0gr

300gr LTC 32.0 gr 1680 1,614 fps 2.055″ Fed 155 Accurate
Suggested starting load: 28.8 gr
300gr XTP 31.5 gr 1680 1,595 fps 2.06″ Fed 155 Accurate
Suggested starting load: 28.4 gr

Users assume all risk, responsibility and liability whatsoever for any and all injuries (including death), losses or damages to persons or property (including consequential damages), arising from the use of any data, whether or not occasioned by publisher's negligence or based on strict liability or principles of indemnity or contribution. Handloads.Com neither assumes nor authorizes any person to assume for it any liability in connection with the use of any data.

 
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cdf294
Central TX
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February 13, 2009 - 1:31 pm
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Hey Jody.

Thanks for the reloading data.  May I make one suggestion for those new to reloading though?

***I hope I am not overstepping my boundaries here.Embarassed***

Before anyone tries to use these loads, be sure you know which manufacturer's bullets are being used. The XTP is fairly obvious but the JHP's could lead to problems.

Case in point- Sierra Manual #5 states on a 357SM with a 180gr FPJ Match Sil. bullet, you should have an OAL of 1.875″ with a max charge of 21.5gr. of 4227 powder.  If you use a Speer 180gr TMJ Match Sil. bullet, it should be 1.990″ OAL with a max charge of 4227 being substantially less at 20gr.

Needless to say, shoving the Speer bullet down another .115″ and then overcharging by 1.5 gr. could become a very nasty situation.

As always, start at minimum charges and work your way up.

Be careful, and happy shooting everyone.

As usual, use at your own risk, no warranties expressed or implied, blah blah blah.

IMG_0985-1.jpg

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IHMSA80x80
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February 27, 2009 - 4:12 pm
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My load is right in there, on the low side, for AA-1680 and my .445 Supermag. With 240 grain bullets, the gun likes 35 grains of the stuff.

The Savantist

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Jody
Salem, Virginia
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February 28, 2009 - 9:09 am
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Hey CDF,

You are definitely not overstepping any boundaries!  I found that information on another site so if it's not correct in anyway we need to make that known!

Thanks,

Jody

 
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