How to adjust DST with two adjustment screws?

[Kynoch]

I have rifle that will only remained cocked if the trigger is set. I’ve tried a number of different ways to adjust both triggers but cannot find a combination of adjustments that will allow me to cock the rifle unset. Any suggestions? Thanks in advance.

[Fyrstyk]

It is possible that you have single phase, double set triggers.  They require the rear trigger to be set before the gun can be fully cocked and fired.  I have several guns with these triggers.  They are usually found on older guns, or target guns, but still can be had from catalogs.

[Daryl]

Can't understand the rear trigger. The front screw of course, manages the hair trigger's 'pull' force.
Double set, single throw triggers must be set before the cock will hold at full bent position.

[smylee grouch]

I have had several of those triggers and the screw between the two triggers adjusts the amount of trigger engagement between the two triggers on all those I have.

[D. Taylor Sapergia]

The rear screw is likely a stop for the trigger's mainspring.  If it were not there, the mainspring would continuously press down on the back trigger forcing its arm hard up on the sear bar, and prevent the lock from being cocked unless the rear trigger is set.  The screw allows the rear trigger to float without tension until it is pulled back.  That back screw allows you to tune the triggers so that a very short movement of the back trigger engages the front trigger, setting it, yet the back trigger can be under considerable force from the mainspring, and even with this short throw, has sufficient powder to trip the sear.

[Grischi]

Maybe this helps (from Pedersoli manual):





Christian