That is great to hear because a Sunbie is what I will be using it for.
I have read the article that you linked but still do not know where i can find the recommended C.O.A.L. for this bullet especially because it is much longer than a standard 110 38 bullet due to the cavity in the back. 
I will use standard pressure loads because of the low velocity this bullet is recommended for but i did not want to seat it to low and have pressure issues.
does anyone have a 110 silver tip to measure or a HE to measure.