The Yukon has a sliding drop block. It came out the same time as the Remington Genesis swing (rotating) block that was imported from Ardessa just like all the Traditions.
It will probably work just fine, as long as your primer headspace is tight between the primer pocket and sliding block. You may need an o-ring to keep things tightly sealed?
Also be aware, the block slides down into the trigger guard ahead of the trigger. If you are experiencing blowback, it may follow the block down in front of your finger.
The Lightning Bolt is a cock on close plunger bolt. Wouldn't recommend trying to shoot Blackhorn 209 out of it. Just be aware of the cock on close bolt. They have been known to slip before the bolt is fully locked down, and obviously discharge. Always keep it pointed in a safe direction if closing the bolt on a loaded and primed rifle. If you can, get a priming tool and prime after cocking with the rifle on safe. Just be extra cautious with this one!