Hatsan mods

Done some more on it tonight.

This is the plan on how i will (hopefully) fill my rams. As you can see bellow on the picture i have got a $29.00 car gas strut from Supercheap auto. The plan is to use this ram to top up the current gams i already have. I am going to cut the base off the new strut and make an adapter to fit from the base of the car gas strut into my fill jig. The car strut is about twice as long as my gun gas ram so there should be enough air in there to top up the gun. I plan on getting some bathroom scales to measure the pressure it takes to compress the rams i can then work out how much more i need to put in for it to work without over pressurizing it.





As you can see it doesnt look pretty and i will clean it up and finish off the welds over the weekend

i'll give you a call next few days adam,

Im really loving this new barrel. I decided to put a scope on the gun did a super quick zero at 20 yards put a few pellets through the chrony and found it was putting out 720 fps now with the 19gr FTT pellets. Just as i was putting it away I saw three rabbits sitting in the filed across the river around 80 meters away. I nailed all three of them, the power of these .25 pellets is fantastic the little bastards didnt know what hit them. Really looking forward to the higher pressure im going to pump into the ram. I would say 100+ meter kills no problem with this once it is finished.

I started work on the full adapter for the ram this morning.


I decided to use alloy as i have lots of this to choose from. I am making it big.

First machine and drill the guide hole.





Next machine out so the shaft can fit through.





Next machine out for the main body to fit and machine o ring groves to seal the main body and shaft.






Next fit o rings and check compression to see if it will seal with the high air pressure im going to be pumping in.





Next fit the gas ram to see if all is good.




This is as far as i have got so far.

Stage one finished.

I will mill a flat peace into the top of the round adapter and drill the fill hole but i cant do that till tonight. so i will post some more later.

I have decided to full up the gas ram myself. I normally send them away to Auckland and they send them back at the pressure that i have asked for. But this can take a week or so to do and at $80.00 a pop it gets a little on the expensive side.


So i am going to build myself a pump and a adapter to fill the rams.

Yea good to see some life in the forum so Nunga can take some life outta possums.

Started on the barrel tonight. Stripped the gun down and took the barrel off ready to pull apart.




Next i took the muzzle brake off because it kept spinning on the barrel. I put the back end in the vise and got the vice grips on the muzzle end and un-screwed the barrel.





Next i measured everything up and started machine the new barrel to fit. one thing i noticed is the quality of the Hatsan workmanship is average at best and they have a lot of clearance on their parts and have put a lot of sh*t in to full up the gaps. I will make my new barrel to better standards and will be a better fit when done.










Finished the machining and cut the thread and it fits very nice now.

This is the finished product.




That will do for now as the walking dead is on and i need to watch that :)

Tomorrow i will work on the Ram and crank the pressure up a bit.

Just picked up my new .25 barrel today.  tomorrow i will be getting everything ready to replace the standard .177 barrel. I will also pump up the pressure in the ram to get the power up so this will be  my possum buster. I hope to get up and around 30fpe by the end of the week.

Watch this space!