Hello crew, just had a Hatsan Torpedo 155 in .25 given to me at a pawn shop that I frequently visit. It has been sitting for several years but I took it home and shot it and it did well but since I have never owned a underlever I would like to know if there is any mods or tuning I can do or have done. I feel like she shoots so slow as I barely get a half inch of penetration when shooting at my pinewood target I have. Can anyone guide me? Is it worth keeping or should I pass this on to someone who knows more about them?
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Hatsan Hatsan Torpedo 155 questions.
- Thread starter DevilSquid87
- Start date
A whole bunch of big questions. I'll have a stab at them.
Any old springer with unwritten history is due mainspring and seals change, plus degreasing and relubing. Hatsan mainsprings aren't high quality, or long-lived, and the piston seal is most likely compromised from assembly at factory. The breech seal(s) can well be undersized when new, not to mention after time and use.
Replacement and aftermarket parts for the powerplant are available, should you learn the barrel is good and you want to invest in the freebie.
A .25 cal pellet has a massively larger surface area than smaller caliber pellets. They should penetrate much less in a solid medium, while making a much bigger hole. I have never assessed airguns by pine board penetration. How do your other airguns do there?
A chronograph would quickly tell how the Torpedo is doing, ie. does it shoot slow for the model and caliber, and is it consistent?
Torpedos are pretty involved as far as underlever guns go, and they dispense with the biggest advantage of underlevers, a fixed barrel. Hatsan's machining precision is such that they struggle to make a solid, dependable underlever (as opposed to a breakbarrel). For these reasons I have steered clear of Torpedos. But many people have them and like them.
Only you can tell if the Torpedo is worth keeping. Do you feel it with it?
Any old springer with unwritten history is due mainspring and seals change, plus degreasing and relubing. Hatsan mainsprings aren't high quality, or long-lived, and the piston seal is most likely compromised from assembly at factory. The breech seal(s) can well be undersized when new, not to mention after time and use.
Replacement and aftermarket parts for the powerplant are available, should you learn the barrel is good and you want to invest in the freebie.
A .25 cal pellet has a massively larger surface area than smaller caliber pellets. They should penetrate much less in a solid medium, while making a much bigger hole. I have never assessed airguns by pine board penetration. How do your other airguns do there?
A chronograph would quickly tell how the Torpedo is doing, ie. does it shoot slow for the model and caliber, and is it consistent?
Torpedos are pretty involved as far as underlever guns go, and they dispense with the biggest advantage of underlevers, a fixed barrel. Hatsan's machining precision is such that they struggle to make a solid, dependable underlever (as opposed to a breakbarrel). For these reasons I have steered clear of Torpedos. But many people have them and like them.
Only you can tell if the Torpedo is worth keeping. Do you feel it with it?
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Depending on your version of Torpedo you should be getting 750-850 FPS with .25.
You need to test it out with a chronograph. If you are not getting close to those numbers it is most likely the spring mechanism. Two versions, gas ram and spring so you need to determine which version you have. Cocking force should be pretty stout. If it isnt that would be a clue.
Also could be a missing breech seal. Given how long it sat it could have dried out and disintegrated with the first shot.
There is a series of youtube videos on the Torpedo. I'd watch them first. Might help you decide if a rebuild is in your future.
You need to test it out with a chronograph. If you are not getting close to those numbers it is most likely the spring mechanism. Two versions, gas ram and spring so you need to determine which version you have. Cocking force should be pretty stout. If it isnt that would be a clue.
Also could be a missing breech seal. Given how long it sat it could have dried out and disintegrated with the first shot.
There is a series of youtube videos on the Torpedo. I'd watch them first. Might help you decide if a rebuild is in your future.
Upvote 0