you guys do all those mods on your hatsans to shoot better speeds n accuracys and reality all you need is regulator. i own a at44 .22 and BT65 .25 I was doing the same trying to make them better but i got tired of the work and frustration so i decided to get altaros regulators for each of them and all my problems are over i get 30 shots on each with almost no ES 3 to 4. unbelievable i could not believe when a saw it. once u get the same speed on every shot accuracy is always there. at44 .22 30 shot count 910 fps 1 to 3 or no es. bt65 .25 30 shot count 930 fps 1 to 3 es.
mine shoots 40 fpe out of the box with 21 grain cudas
Quote from: jeff76 on May 05, 2015, 07:25:58 AMmine shoots 40 fpe out of the box with 21 grain cudasWow! That's good, I take back what I said.If you are shooting 40fpe right out of box, getting 10 more shouldn't be hard.I did get my gun used and it was slow.I'm going to get some bigger pellets and run chrono test again because my at44 is pretty strong now.My brother does a lot of shooting at 200 yards and first time I took my at44 over and shot with him I had to use so much hold up on scope I thought I was shooting a red rider, and I still didn't shoot much over 150 yards. Now I can shoot 200 yards and still see in scope.Bob's thread on at44 is super, but remember you have a 22 and he has a 25 cal so don't drill out ports as hard.When you have gun apart polish every thing you can, sides of hammer, end of spring, look for any ruff spot and take it down. Polish ports after you drill them out.After I drill out barrel port I take a small round bit on dremal and take out the raised edges the drill bit leaves on inside of barrel.I'm sorry as I don't remeber the drill bit size that I used.are you sure as to which valve stem you have in your gun. if its the 12fpe stem, you will have lots of problems creating power