I didn't cut the plunger head off though, opened the spring up and worked it around till it came off.
I haven't measured distance but this thing is shooting as far as my Cycloneshot with elite darts,
![:o](http://nerfhaven.com/forums/public/style_emoticons/default/ohmy.gif)
Couldn't believe how week the Strongarm spring was, must be a very efficient plunger.