I’ve been shooting the Hatsan Hydra for a few months now, and have used the .22 and .25 caliber barrels on a couple hunts, and gotten in some range time with the .177. But when rabbit season opens in a couple weeks, I want to do some hunting with the arrow barrel, using some small game tips. So I started off by simply swapping the barrel, which took a matter of a minute or two. The next step took me a little longer, maybe 5 minutes, I needed to adjust the hammer spring preload. This entails removing the action from the stock, removing a set screw with a 2mm hex tool, then inserting a 4mm hex tool into a port at the rear of the rifle and bottoming it out. This will increase the arrow velocity from about 150 fps to approximately 250 fps. With this tweaking of the rifle done, I drove to a spot behind a local industrial complex and set up my target in a back lot. I used a standard archery target, unlike the dual crossbow targets I had to use when sighting in the dedicated Hatsan arrow gun, the very powerful Harpoon (more on this before deer season starts!). I set the target at 30 yards using field tips. My first shot was to the left, so I adjusted the windage and sent another arrow down range. It was moving in the right direction but not quite there yet, another adjustment and another arrow showedRead More →