New brass procedure

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ricehombre

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Oct 25, 2005
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Just bought new Rem 270 win brass. Do I need to FL size and trim or can I get by with neck sizing for a bolt action rifle? Also planning to use IMR4831 and manuals go 52-57 gr. for 140 bullets. Any suggestions for SST or Accubonds? Thanks
 
With new brass I FL size, trim all to the exact same length, deburr the flash holes, chamfer, deburr, and turn the necks. After fire forming, neck size only. After a few firings they will start to chamber tightly. Some say this is a bad thing. I think it's a good thing.
 
I treat new brass just like once fired. It goes through the whole process, just to ensure it's all the same. I've got 500 new .45-70 to process right now. The shippers must have used the package for a soccer ball, since there are so many deformed cases in the package. Bulk brass takes a beating in transit.

The other thing about new brass is it may have been produced on different dies out of the machines. It depends on what the factory is running at the time, since they run different calibers at different times. If they have a big demand for a particular caliber, they may devote more than one production line to that caliber, so they can get it done quicker.

Hope this helps.

Fred
 
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