bote wrote on Sep 13^th, 2017 at 2:46pm:

[1]Do you flare the case mouths like pistol rounds?  [2]Do you crimp?. . .

1. Yes.
2. Only enough to remove the flare.

I hope you realize that 457130 is a very specialized bullet designed for short range "gallery" use and that extreme low-density loads of fast, dense powder like 700X require great caution to avoid double charging. A novice would do better with more conventional bullets and a bulky powder like 4759 that makes a double charge much more obvious on visual inspection before seating.

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