I really appreciate the responses. Unfortunately I got a defective rifle. So after realizing its low power I decided to take it apart and clean everything with non chlorinated brake cleaner, i also use a dowel with a slit cut in it and wrap the blue shop rag/paper towels around and cleaned everything real nice. And well guess what when I pulled the piston out of the compression chamber there was a lot of surface rust inside the compression chamber about halfway down all the way around so I took the dowel (1'' dowel) with sandpaper and drill then proceeded to hone it (DIY style) I started off with 320 grit sandpaper and went all the way up to 2000 I was literally pouring out orange rust, out of the compression chamber!!!!!! Anyways when I got it to almost a mirror shine ( I only did it for a couple of seconds with each grit of paper) when I put the piston in it it was the most ununiform compression chamber I've ever felt literally felt like I was pushing it through corrugated pipe!!! Long story short it's going back to AOA also after tearing it down I really don't like the mechanics of it and the way it's built seems a little cheap especially that little spring that holds the breech seal in place??? I'm probably going to order a Diana 48 and if it doesn't workout I think I'm done with Diana for a while she's not the lady she once was..... Although I love my 350.177 but I had to order three to get one good one...Thanks again, Forrest
Quote from: F. Baum on August 03, 2022, 09:44:44 PM I really appreciate the responses. Unfortunately I got a defective rifle. So after realizing its low power I decided to take it apart and clean everything with non chlorinated brake cleaner, i also use a dowel with a slit cut in it and wrap the blue shop rag/paper towels around and cleaned everything real nice. And well guess what when I pulled the piston out of the compression chamber there was a lot of surface rust inside the compression chamber about halfway down all the way around so I took the dowel (1'' dowel) with sandpaper and drill then proceeded to hone it (DIY style) I started off with 320 grit sandpaper and went all the way up to 2000 I was literally pouring out orange rust, out of the compression chamber!!!!!! Anyways when I got it to almost a mirror shine ( I only did it for a couple of seconds with each grit of paper) when I put the piston in it it was the most ununiform compression chamber I've ever felt literally felt like I was pushing it through corrugated pipe!!! Long story short it's going back to AOA also after tearing it down I really don't like the mechanics of it and the way it's built seems a little cheap especially that little spring that holds the breech seal in place??? I'm probably going to order a Diana 48 and if it doesn't workout I think I'm done with Diana for a while she's not the lady she once was..... Although I love my 350.177 but I had to order three to get one good one...Thanks again, ForrestWill AoA take it back after you honed the comp tube? I'm sure they will say you ruined it.Good luck.-Y