I broke every transfer bar on every Ruger Bisley Vaquero I owned (6 in all)
My advice is to send them to Wes Flowers and let him remove the transfer bars and install a half cock like the Colt. He can also short stroke the hammer travel for you.
He did mine and it made a world of difference.
JM
Wes is tops.
I've had several done by him. He "makes them run like a Colt" and that's no lie. They're just as safe as a Colt. One has to be careful to have the hammer on an empty cylinder and load 5 rounds.
The cowboy action crowd loves Rugers set up like that.
DF