Mods Done: Level 4 reinforcement, replaced plunger tube, plunger head molded to tube, 4 piece barrel.
Comments: I have two crossbows, and the other gets around 100' on a good day, thats normal for an xbow. I only ever use this one though, because it gets absolutely absurd ranges.
The original crossbow plunger tube actually narrows slightly towards the front of the gun, meaning the stock head will not seal further back, reducing the effective draw. By replacing the entire tube with PVC (almost same size, a little larger diameter) and then sizing the head to that, you can increase the draw length to that of the entire plunger. Also, an aluminum sleeved shaft, new spring, lots of bands, a 4 piece barrel (essentially CPVC to brass), and great dart/barrel don't hurt.
Edited by Groove, 03 January 2009 - 11:36 PM.