Are those the original gut snares for the drum? They look too long for this system/drum.
In my experience (Super sensitives with gut), the brass ferrules on the gut strand should be crimped fairly close to the fine tensioning screws (butt end). Contact between ferrule and the brass thingy(?) attached to the screw allows the strand to be stretched.
Sometimes it becomes necessary to re-adjust them when they were assembled in a dry climate and the perhaps shipped to a humid climate.
I would adjust the snare adjustment knob to a position to a position just about at the mid-way point then adjust all the fine tuning screws (butt end) uniformly down to the half way point. Then, using needle-nose pliers, gently squeeze the brass ferrules 180 degrees from the original crimp and that should relax the grip on the gut strand enough to slide them down to a position of just touching the thingy on the fine tension screws. Then, re-crimp the ferrules in place. I have actually done this once, but was warned that the Ludwig ferrules can break after 2-3 adjustments.
Assuming I am correct about the overall length of these strands, you can trim off the excess gut. Just go slow and take your time.