So the new year has started well for me, I have been working on my Hatsan Mod55s and it all seems to be going well. Power has not been an issue, however trying to tame the rifle down a little has been an issue which I have finally got my gead around now. The problem has been with the original spring. Now I want to make it clear that the whole point has been to make this a rifle suitable for FT so a very accurate rifle is the be all and end all, and to that end, recoil, is what it is all about.
The standard Mod55s is a cracking rifle as it comes out of the box, but for FT I need the rifle to, not only be accurate, but with very little recoil. The rifle itself came to me, new from Solware, and as I say, out of the box, is bloody good. Nothing wrong with power, accuracy or weight, but I wanted more.
The standard spring is fairly soft so to keep the power up to a servicable level (10.5+) fpe there needs to be some preload. This preload increases the amount of recoil, so the problem is to reduce the preload but without sacrificing power. Back in my MotoX days and playing with suspension, if you shorten the spring but replace the length with a preload spacer you harden the effective spring action, this was, and is not the result I need. I would have to go down the replacement spring route.
I had a Titan spring in the tool box, so I tried that. The spring was way too long (3") so I cut it down. I had a delrin guide kicking around so used that as well. A series of trial and error then took place until I was happy with the level of recoil and the balance of power.
As a consequence of all the stripping and rebuilding I managed to damage the safety mechanism in so much as I had to remove the auto safety mechanism, as what was happening was I would cock the rifle and sometimes the safety would get stuck on, which needed the rifle recocking and such too many times and it bacame tiresome.
So as it stands now, the rifle shoots 8.4gr JSB exacts at 758fps which works out about 10.7fpe Which is what I was looking for in the first place. Recoil is down sufficiently I can place a pellet on top of the rear scope mount and fire a pellet and the pellet stay on top of the rifle. Its not perfect but for me its very close.

So for now its a good un