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04-14-2016, 10:29 AM
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Recipe help for .357 with MBC 158gr LSWC
I recently purchase some Missouri Bullet Company Lead SWCs. I purchased the bullets that are specific to .357s with a Brinell 18.
I have Win 296 and AA no. 9 powder with small magnum primers.
The problem ... I can't find any recipes for "lead" hot loads. Any suggestions, recipes, or ideas on places to look / research.
As always ... Thanks in advance for the help!!
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04-14-2016, 11:16 AM
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For L and N frame revolvers I have good results in my .357 Mag's with my home cast 158gr LSWC over 15.0 gr of H-110 with a magnum primer, accurate at just under 1,300 fps. Check for a bit of bore leading with the MBC bullet it may or may not. I keep this load out of K frames, no sense in beating them up. I have not had much luck with AA-9 yet but I'm still working on it.
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04-14-2016, 11:48 AM
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Quote:
Originally Posted by ccompton84
I recently purchase some Missouri Bullet Company Lead SWCs. I purchased the bullets that are specific to .357s with a Brinell 18.
I have Win 296 and AA no. 9 powder with small magnum primers.
The problem ... I can't find any recipes for "lead" hot loads. Any suggestions, recipes, or ideas on places to look / research.
As always ... Thanks in advance for the help!!
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Seriously??? It seems you have a computer, Search engines will find more data then you could possibly need.
Lyman CAST manual has lots of data.
Perhaps look here to start, use at your own peril.
0.03 seconds to load page
357 Magnum Load Data - Handloads.Com
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04-14-2016, 12:05 PM
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You could also spend a little more and get some gas check bullets.
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04-14-2016, 12:18 PM
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Thanks Vulcan Bob - appreciate the response and similar folks on this community willing to assist with these type questions! Great resource site with many helpful and friendly folks ....
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04-14-2016, 12:35 PM
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That B 18 lead bullet can be loaded "Hot" ............. but
it should be noted on how it does in your barrel with the powders used, as to how it does on leading.
Some bullets can take a full load while some of my lead bullets need to be kept at a low to moderate speed to keep cleaning to a minimum.
1350 fps is doable but will you be a happy camper with this load? I felt no need to push a 158 lead bullet any faster in my 6" 686........... and most are from 950 to 1133 fps.
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04-14-2016, 01:28 PM
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Like others have said there is no shortage of load data for 158 gr cast
bullets in the .357 magnum. But if you want specific recommendations
from personal experience I can offer one. I have no experience with
any AA powder and I prefer 2400 to 296 in the .357 but I have used
296. 296 really performs best at the maximum load levels and needs
magnum primers which you have. You will run out of case capacity in
the .357 magnum before you have a problem with 158 gr cast bullets.
17.0 - 17.5 grs of 296 with a mag primer, good case neck tension,
and a heavy roll crimp will give you a good .357 load in your revolver.
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04-14-2016, 06:00 PM
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I use 15 grains of 2400 with a Lyman 358156 and a gas check for my N frames.
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04-15-2016, 02:09 PM
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Quote:
Originally Posted by ccompton84
Thanks Vulcan Bob - appreciate the response and similar folks on this community willing to assist with these type questions! Great resource site with many helpful and friendly folks ....
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Oh jeez, I forgot the start at 13.5 grains and work up from there caution! I used jacketed load data for this load as lead bullets without a gas check will generate lower pressures as a rule.
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04-18-2016, 03:20 AM
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Moderator SWCA Member Absent Comrade
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Lyman 49th Edition and especially the Lyman Cast Bullet 4th Edition are good sources for lead bullet load data.
With a 158gr LSWC bullet in a .357 Magnum case I like 9.2gr to 9.6gr HS-6 with a CCI 550 primer.
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04-18-2016, 03:41 AM
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For some reason, over the years I ended up using -2400/standard pistol primers for my Magnum cast bullet loads in .357, .41 and .44 Magnum and W-296/Magnum pistol primers for the jacketed bullet loads. While I found gas check bullets useful in .357, I found I needed them much less in .41 and .44.
Always work up to maximums when changing any component, but 14.0 grains of -2400 with any good cast 158 grain SWC bullet with a standard primer worked well in any .357 I shot them in, K, L, N or Colt, and wasn't a maximum load. Good, stiff roll crimps helped with cleaner combustion and less unburned granuals of whatever left in the bore, as well as defeated bullet creep.
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04-18-2016, 07:30 PM
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Free Accurate powder data at Load Data « Accurate Powders. Download or save the PDF file to your PC and you will have it.
From an early 2000 Winchester on line manual.
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04-19-2016, 06:50 AM
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Vulcan Bob turned me on to the 15 gr. H110 load and it shoots really well. I put a 158 gr. Penn T.C. bullet on top of it and it's very accurate. NO leading for me with this combo. Your mileage may vary.
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04-19-2016, 01:52 PM
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Quote:
Originally Posted by Steve C
Free Accurate powder data at Load Data « Accurate Powders. Download or save the PDF file to your PC and you will have it.
From an early 2000 Winchester on line manual.
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"From an early 2000 Winchester on line manual"
The velocities in this table are obviously from long test
barrels and are far in excess of what you will see from actual
revolver barrels.
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