Hatsan mods

Greetings Jim48, welcome here.

Shows the benefits of a forum over social media in that the info is easily found and stored here.

I'm not familiar with these, so hopefully Nunga will help you out.

Regards

Paul.

Great read!

32 fpe is a great outcome, hope to hear the rig is still going?

Hey Nunga,

I think I need your help and expertise please!

I had to go out to a friends house tonight to dispatch a possum they caught in a live trap.
They don’t firearms so I go and sort out what ever they catch doing their back yard trapping.
I usually take one of my PCP’s, but tonight I thought I’d take a springer, just because I never get to use them much so why not?
I picked my Hatsan Airtack .25 which is the cheapest .25cal that Hatsan makes, and drove out to the property.
Took the cage off the fence, went to cock and load the Hatsan, broke the barrel, and there was nothing!!! No resistance at all, the barrel just about dropped down by its self 😳!
It engaged the manual safety, but didn't even cock/engage the sear of the trigger… just nothing 😳

It was working fine last time I shot it, so I don’t know what’s wrong with it now.
All I can think of is it must be a gas ram and its seals have gone???

Any chance you could teach me how to strip and service a gas ram?

Thanks,
Pete.

Walk quietly, but carry a big stick.

Strip it down first and take the ram out and have a look to see whats going on. If it is the ram they are sealed units and you have a zero chance of fixing them. If the gas has leaked out then the seals are gone so getting it re gassed is not solve the problem. Best bet would be to go to Rons and get a replacement ram for it. It doesnt have to be a Hatsan ram the gamo or Crosman have the same stroke i think and fits. just take the old ram with you to make sure. The last time i got one off Ron cost $60.00 but that was a while ago

2nd place HP springer - WFTF World Championships 2014

The gas rams only have like 5mm of preload on them and since the seals sound like they are gone you shouldnt need to put a sash clamp on. Having said that it might pay to use it just in case lol.

Definitely need it to put the new one in. they are super hard to compress and not like a spring.

2nd place HP springer - WFTF World Championships 2014

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Pauly5 Members Profile Send Private Message Find Members Posts Add to Buddy List Forum Moderator Joined: 11 Mar 2013 Location: Titahi Bay Status: Offline Posts: 1701	Post Options Post Reply Quote Pauly5 Report Post Thanks(0) Quote Reply Posted: 27 Jan 2026 at 6:31am
	Greetings Jim48, welcome here. Shows the benefits of a forum over social media in that the info is easily found and stored here. I'm not familiar with these, so hopefully Nunga will help you out. Regards Paul.

RangerPete Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 19 Apr 2023 Location: Cambridge. Status: Offline Posts: 1048	Post Options Post Reply Quote RangerPete Report Post Thanks(0) Quote Reply Posted: 29 Jan 2026 at 6:25pm
	Just had a read from the biginning... great spot Nunga, but wheres the end? Is this your goat slayer Hatsan? hows it shooting these days?
	Walk quietly, but carry a big stick.

Mintie Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 18 Feb 2017 Location: Hawkes Bay Status: Offline Posts: 84	Post Options Post Reply Quote Mintie Report Post Thanks(0) Quote Reply Posted: 30 Jan 2026 at 1:59pm
	Great read! 32 fpe is a great outcome, hope to hear the rig is still going?

nunga Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Admin Joined: 09 Mar 2013 Location: Pukekohe Status: Offline Posts: 1088	Post Options Post Reply Quote nunga Report Post Thanks(0) Quote Reply Posted: 30 Jan 2026 at 7:36pm
	Yeah it is still going strong and yeah thats the goat slayer. havent got out for ages as im so busy with work these days but i do plan on getting back out soon!
	2nd place HP springer - WFTF World Championships 2014

RangerPete Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 19 Apr 2023 Location: Cambridge. Status: Offline Posts: 1048	Post Options Post Reply Quote RangerPete Report Post Thanks(0) Quote Reply Posted: 31 Jan 2026 at 11:18pm
	Hey Nunga, I think I need your help and expertise please! I had to go out to a friends house tonight to dispatch a possum they caught in a live trap. They don’t firearms so I go and sort out what ever they catch doing their back yard trapping. I usually take one of my PCP’s, but tonight I thought I’d take a springer, just because I never get to use them much so why not? I picked my Hatsan Airtack .25 which is the cheapest .25cal that Hatsan makes, and drove out to the property. Took the cage off the fence, went to cock and load the Hatsan, broke the barrel, and there was nothing!!! No resistance at all, the barrel just about dropped down by its self 😳! It engaged the manual safety, but didn't even cock/engage the sear of the trigger… just nothing 😳 It was working fine last time I shot it, so I don’t know what’s wrong with it now. All I can think of is it must be a gas ram and its seals have gone??? Any chance you could teach me how to strip and service a gas ram? Thanks, Pete.
	Walk quietly, but carry a big stick.

kruzaroad Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 03 Jul 2022 Location: Hastings 4 now Status: Offline Posts: 2792	Post Options Post Reply Quote kruzaroad Report Post Thanks(0) Quote Reply Posted: Yesterday at 6:09am
	Just as a side thought pete, the lug that engages the piston to push it back, when you cock it hasn't either broken or gone under the piston?

nunga Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Admin Joined: 09 Mar 2013 Location: Pukekohe Status: Offline Posts: 1088	Post Options Post Reply Quote nunga Report Post Thanks(0) Quote Reply Posted: 21 hours 48 minutes ago at 12:12pm
	Strip it down first and take the ram out and have a look to see whats going on. If it is the ram they are sealed units and you have a zero chance of fixing them. If the gas has leaked out then the seals are gone so getting it re gassed is not solve the problem. Best bet would be to go to Rons and get a replacement ram for it. It doesnt have to be a Hatsan ram the gamo or Crosman have the same stroke i think and fits. just take the old ram with you to make sure. The last time i got one off Ron cost $60.00 but that was a while ago
	2nd place HP springer - WFTF World Championships 2014

RangerPete Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 19 Apr 2023 Location: Cambridge. Status: Offline Posts: 1048	Post Options Post Reply Quote RangerPete Report Post Thanks(0) Quote Reply Posted: 12 hours 30 minutes ago at 9:30pm
	Ok thanks. Will I need a sash clamp to strip it if there is no pressure in the ram? Probably not I guess. Will I need a sash clamp to put it back together once I have a new ram?
	Walk quietly, but carry a big stick.

nunga Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Admin Joined: 09 Mar 2013 Location: Pukekohe Status: Offline Posts: 1088	Post Options Post Reply Quote nunga Report Post Thanks(0) Quote Reply Posted: 12 hours 1 minutes ago at 9:59pm
	The gas rams only have like 5mm of preload on them and since the seals sound like they are gone you shouldnt need to put a sash clamp on. Having said that it might pay to use it just in case lol. Definitely need it to put the new one in. they are super hard to compress and not like a spring.
	2nd place HP springer - WFTF World Championships 2014