Not sure exactly where, but this was talked about in another thread. I will take a look for it after I post this, but you might be able to look thru subject here and find it too.
"There is actually 4 inces of rifleing in your revolver take a ruler or a tape measure and measure from the forcing cone to the tip and you will see that its about 5 inches, the last inch is your compensator.
http://www.taurusarmed.net/forums/index.php?topic=4554.0
"There is actually 4 inces of rifleing in your revolver take a ruler or a tape measure and measure from the forcing cone to the tip and you will see that its about 5 inches, the last inch is your compensator.
http://www.taurusarmed.net/forums/index.php?topic=4554.0