[ To answer the more recent era questions (i.e. 640, 64, Rugers) try to reach member BigBoku, I was long gone by the time those guns came into the picture.

Cheers;
Lefty[/QUOTE]

The best holster I have found for my method of BUG carry is the GUN GONE REVOLVER made by Bell Charter Oak, it is perfectly balanced combination of hidden yet accessible when worn underneath my duty belt.