HW90 help needed

Hi Crowski,

Whatever happened with your HW90? Did you figure it out?

I believe that your piston seal is damaged and as the others have said a chrono will show this up with wide variation in FPS . I had a similar problem with my 95 and this was the seal that had to be replaced. Good luck.

That would certainly account for inaccuracy, but how about the very high cocking effort?

I hear you. 

I got into airguns about 2 years ago. I quickly discovered that my comfort limit is about 8 pounds. Preferably 6 pounds. It's like cars. Some guys like the big block V8's. Others like high revving light weight motors. 

Keep us posted on your HW90. I'm very interested. 

Gas rams will always have a higher cocking effort when conpared to a spring gun. The gas ram is a short stroke gas cylinder that needs to generate power in half the distance a spring travels. Your seal could have been damaged during assemble so it might pay to check it out. Your velocity sounds low for the cocking effort required. Try different weight pellets, heavier is not always better as weight can change the shot cycle. Unfortunately you need extras in order o make the gun shoot well, like a hand pump, and big assortment of pellets. You need to find the pellet your gun likes, not the pellet you want to shoot! Get the rifle consistant over the chrono first!! Then make sure your scope and mount is up to the job. Gas rams can be as hard or harder on scopes and mounts that typical springer are. I would recrown the barrel to be sure that is not an issue. If you dont have the tools or ability to figure this out then go see Dave Slade, he will be well worth his cost!!