There is a huge amount of 40 range brass available, you find a lot of LE using 40 that don't reload. I use 170-175gr LSWC with Universal, 4.8grs will make major in my guns. I've never had good results with faster powders like Clays or Red Dot in the 40, always went with Universal or Unique. The 40 is a high pressure cartridge, twice the pressure of 45s' so loading doesn't work the same with most powders.
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