Thanks Steps! I’m just back from the testrun. The first three shots went nowhere, somehow the shooting line wrapped itself around the rubber and stopping the spear in its track. Wasn’t very fishy either so I went to look for crays while thinking what could have caused it. Turns out, the line is too close to the rubber when the gun is loaded, so I took tool number 2 – piece of gaffer tape – and glued the line to the spear. Tada! fixed. (i’ll come up with a better solution). The gun has quite some power and is super accurate, although I didn’t use longest rubber stretch possible. And on another note – doesn’t need ballasting, the holes in the side work as hoped. Sinks very slowly when loaded, floats when fired.

Very nice!