Awhile back I saw something similar to this either on Trapperman or YouTube, this is not an original idea of my own, but I figured some others could benefit from a visual. I’ve always tuned my 330’s and other body grips on the bench with a standard conibear safety that allowed the trap to open a fair amount before it stopped. A regular conibear safety also lets the trap have free will, so when it fires it jumps all over the bench. Made it hard to get accurate readings of trigger travel.
This little contraption is nothing more than an old piece of rough cut 6x6 and some other scrap wood. This catches your trap when it fires, and only allows it to open slightly. It’s not a super harsh dry fire on the springs and the trap is contained by the wood blocks so it isn’t jumping around. You can get good accurate readings of how much travel is in your trigger. The gap between the two main blocks is a little shy of 4” and the gap between the top two blocks is 2”. The whole deal is 2 and a half inches tall off the 6x6, and believe it or not that is pretty important. Any taller and trigger wires drag on a 330. On smaller conibears I offset the triggers to one side or they’ll hit.
![[Linked Image]](https://i.postimg.cc/285yWGxG/IMG-4428.jpg)
![[Linked Image]](https://i.postimg.cc/28X67WcD/IMG-4426.jpg)
![[Linked Image]](https://i.postimg.cc/Z5Bq7q2y/IMG-4427.jpg)
Here is a brand new out of the box Belisle 330 with my chain/cable setup. Teardrop ring off the spring, swivel, 16 links of #3 chain, swivel, 6 feet of 1/8 stainless 7x19 cable with copper crimped ferrules, and a Sleep EZ hook on the end.
![[Linked Image]](https://i.postimg.cc/Pq15HRtX/IMG-4413.jpg)
Slide the trap into the contraption. Get yourself a brick masons rule, a tape measure isn’t stiff enough usually. Line your eyes up to the edge of the frame, push on the rule and watch how far the trigger travels before it fires. A factory belisle 330 is about 2 inches. I want it to be about half an inch so I don’t hip catch otter. Just like the trap tuning instructions here on the Tman archives, I file the round notch a little deeper so it makes full contact, and then put an angle on the end of the dog. So it looks about like this.
![[Linked Image]](https://i.postimg.cc/XqYjwN9q/IMG-4414.jpg)
![[Linked Image]](https://i.postimg.cc/jqMdRNr7/IMG-4415.jpg)
![[Linked Image]](https://i.postimg.cc/C5rFJy4N/IMG-4420.jpg)
![[Linked Image]](https://i.postimg.cc/X7XNqJVD/IMG-4424.jpg)
File a little and test your travel and after a few you’ll be able to tune one in about a minute. It doesn’t take much filing to get them where they need to be.
Bend your trigger wires to the shape you wish, degrease and paint/dip the trap and off you go with a properly tuned trap. Even Belisles aren’t ready to go out of the box. Thanks to whoever thought this up initially as it’s made my life easier!