I have been researching all previous threads regarding pneumatic spearguns. What a steep learning curve. In fact its almost becoming a technical obsession. I can see why once you start tinkering around with one you cant top. I have learnt so much between your threads and Tromich threads. If I could speak Italian or Spanish I wouldnt get any sleep looking at all those wonderfull web pages.
The truth is we here in Australia are so far behind in the practical uses of pneumatics, especially on the East Coast. Where I spear in the shallows for estuary fish the water is most times cloudy. The benefit of a shorter barrel to swing around is vital, especially if it has the power of a longer band gun. I can only imagine the power in those new Omer and Cressi guns.
After further looking into the problem I found that the hand pump seals are shot. I went to the local dive shop and pumped the gun there. It feels much better. I can really feel the power in it when trying to load. Hopefully I can test it out in the next few days.
Does anyone in Australia distribute/sell dry barrel kits? I have sent emails to various companies in Europe with no replies. In your opinion what is the best dry barrel kit for a Seac Sub Asso 90?
Once again thanks for the info.
As Foxfish says Tromic and his son are probably the best way to go for a vacuum barrel kit. In Australia pneumatic guns are not that popular and people often have adverse views about them based mainly on hearsay and misconceptions. Write to people who know what they are talking about rather than waste time elsewhere. You will need a spring stainless spear for the better shaft surface required for the seal in terms of long term durability, other shafts eventually pit with rust spots.