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Discussion Starter · #1 ·
hello all , I recently found a box of .357 magnums I loaded
some time ago with 12.5 grs of 2400 using Lyman 357446 ,
I plan on shooting this load in a model 19 and a couple of other
medium non n frame .357 revolvers is load too hot ??
please post, many thanks, rojo
 

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Discussion Starter · #3 ·
hi , I most likely loaded the ammo for a n frame , unsure whether thee loads are tooo hot for smaller frame magnum
 

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The old .38-44 load was 13.5 grains of 2400 under a 158 gr lead bullet. I would not think your load would hurt a Model 19.
 

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I just checked my Lymans 49th edition. They list 2 different 120gr cast bullets. One has a start load of 13gr of 2400 with 16.5 the max the other says 13.5gr of 2400 for a start with 19.5 as a max. Your load of 12.5gr should be fairly mild and safe in any 357 that's in decent shape
 

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I'm not familiar with this bullet and didn't readily see it in my Lyman 50th listed under .357 Magnum. I think it's intended to be a 160 gr. bullet. If so, the max loading in the 50th for the 160 gr. #358311 is 15.5 grs. 2400.
 

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You can cause damaging over-pressure by using loads below the minimum listed in reloading guides.

This happens when the bullet is not moving fast enough to engage with the barrel leade and pressure builds trying to push it into the rifling. That is why the reloading books document minimum loads. Under those powder charge levels, pressure can rise dangerously.
 
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