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LARGECALIBERMAN
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| Posted: May 01 2017 at 1:41am | IP Logged
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I want to load with Bullseye LSWC 158 grain with gas check for a 357 magnum. Can anyone come up with a suggestion as to the best load to use with little or no leading?
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Rex
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| Posted: May 01 2017 at 3:40am | IP Logged
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That gas check should cut the leading to almost nothing with any reasonable load you put up.
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richhodg66
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| Posted: May 01 2017 at 3:46am | IP Logged
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Bullseye is a fast powder for the .357. I'd think somewhere between 4.5-5.0 grains would be good. I wouldn't try to get top velocities using Bullseye. In fact, you could probably find a lot of Bullseye data for the .38 Special that would be safe in the .357 due to the bigger case.
I just checked my old Lyman manual, for a 158 grain gas checked bullet (#358156) it lists a starting load of Bullseye at 3.0 grains for 780 FPS and a max of 4.5 grains for 1015 FPS. The max loading lists a CUP pressure of 18,000 which seems low, so that may be conservative data, but should still give you a good starting point.
Edited by richhodg66 on May 01 2017 at 5:03am
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The_Shadow
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| Posted: May 01 2017 at 7:47am | IP Logged
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5.0 grains Bullseye was my target loading from my Mod 19
6" barrel.
However Blue Dot would really drive them 158's at higher
velocities... 
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Old Ranger
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| Posted: May 01 2017 at 8:28am | IP Logged
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If Bullseye is all you have, I would top it off at 4.8gr. That's also the top load from Alliant as well. Some manuals list higher loads but pushing the envelope is not in my operating methods. I'm sure obtaining powder in the islands is a real concern at times. So if you have only BE then you work with what you've got huh? 
Edited by Old Ranger on May 01 2017 at 12:23pm
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richhodg66
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| Posted: May 01 2017 at 3:35pm | IP Logged
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You might do better to load those with Bullseye in .38 Special cases.
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Handloads.Com Forum : Cast Bullets
Topic: Gas Check
