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Reloading 9mm with CCI 550 magnum primers

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Old 10-12-2017, 01:35 PM   #1
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Default Reloading 9mm with CCI 550 magnum primers

For my Bersa Thunder Pro 9mm UC, I am reloading 124 FMJ (for break in period) with CCI 550 magnum primers. I have done research and found this is possible.
Would anyone suggest a slight negative adjustment in the minimum load (I will be using Unique or W231) or stick with the minimum load?
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Old 10-14-2017, 05:40 AM   #2
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I see no reason for making an adjustment in your load for the 550 primers. Especially since you are at the end of the low range.
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