S&W 52-2 Taper crimp ?

If you ever taper crimped. how much did you use? .002 - .004
Yes I know will have to try just want to know a starting point and not waste 
powder & primers 
Cases std resize .375 Bullets .357 button nose & .358 Speer. 
Thanks 
Lamar H

I looked at my M52-2 notes and saw I crimped to 0.370". I just matched the Zero ammunition I had on hand and never machine tested the loads.

Stephen

Btw, thanks for helping me when I got started with Bullseye at River Bend.