I like the Safariland Comp III....just index the bullet tips into the charge holes and palm the speedloader stem which is spring-loaded and 'shoots' the rounds into place with authority.
Then while still palming the speedloader stem, simply 'rock, it forward and outta' the way.
I use them in SSR...
Here's a pic of my 19-4....
I converted it to DAO, bobbed the hammer, and this was my "truck gun" for many years.
The bluing was very worn and some pitting had began at the time I sold it to a friend. He sent it off and had it hardchromed.
I regretted ever selling it and it changed hands a...