Cartaya

I loved Armageddon.... I'm going to miss Armageddon alot, this year can't make it, working in Singapore.

Ok, being this is my favorite LS spring I know exactly how to make it work.  They are worth the trouble as they are just fantastical Springs with tons of power!

Your problem your having is most likely Closed space, it is the distance between the mickey mouse ears and the Plunger head that is required for the wire space of the spring.  If it exceeds what the Longshot allows for the rod catch to clear, it will not prime because the plunger rod will not go back far enough to engage the catch plate.

Other issues can be...

*Stock Catch plate spring.
*Plunger cup is undersized/ deformed/ bent.
*When modding breech, pusher was installed put too far back to prime correctly.
 
Aside from those issues, try this first, get a screw, same size as a longshot plunger head screw but 3mm longer, what i did is just get a #6 x 3/4" screw and drill out the plunger rod, normal depth beforehand.  The i use a spring, it's a 6.3mm long spring, .7 mm gauge,



...In laymans terms, a 2.5mm spacer (or how ever much i need up to 4mm) that goes into the plunger head inside the screw and gives me more space internally for the spring.  I then use silicone in the hexagonal hole in the plunger head so as i am tightening it, i make a seal, afterwards wiping off the excess.  I let that dry for a day, and put that in my Longshots.

Other things to consider.

*The new NT16 KG springs Have ground ends, better gold Plating, 12 coils instead of 14, meaning 7mm less solid space needed to prime.

*Grounding ends flat helps, especially for 2mm Gauge wire and up.

--Cartaya

This is what I was afraid of actually, that Nerf History, like all history also being in the eye of the beholder, might also be largely forgotten.  Me not being that vintage into modding (maybe 2008 with one blaster, more serious 2012 on), I always love stories from veterans like Apollo256 and Baghead at S.C.U.N meets, mostly the parts I missed before being really involved.  I even Tweaked a Sharpshooter back in my Highschool days, nothing much, mostly the Darts with the fins.

--Cartaya