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Yes I use a Lee progressive for 40 and 45. I prefer to use Titegroup. 4.7gr, below a 165 FMJ or plated bullet.
I seat and crimp in the same station with the Lee seat/crimp die. I don't crimp very tightly, just enough to remove the bell, and a very little extra to hold the bullet in place. I don't see how there would be pressure issues crimping the .40, factory rounds are crimped. Also, whenever you are loading for a new caliber or even just experimenting with different powders, you should start well below max, and work your way up to an acceptable well working round in small increments, checking for signs of excessive pressure as you go.
[thread hijack]Is there anyplace to go on the web where there is an illustration of excessive
pressure indicators? I must be doing something right as I haven't ever seen any signs that
I can point to and say Aha, excessive pressure![/thread hijack]
Yes I use a Lee progressive for 40 and 45. I prefer to use Titegroup. 4.7gr, below a 165 FMJ or plated bullet.