About four weeks ago I noticed a drop in the POI of my HW 44. At first I thought it might be a scope issue, but that checked out ok. I then chronied the velocity and found that it had dropped by about 200 ft./s. I checked to make sure the probe seal was not the problem and there was no blowback from the receiver. The weapon was still under warranty, so I gave AoA a call and they said to send it back. I sent it back and they fixed the issue. I know that others on this forum have had the same problem. Here is what AoA said the problem was and how they fixed it:
Hi Charles,
I wanted to let you know that your HW44 has been repaired and will be shipping back to you. The hammer adjustment screw had backed out so we re adjusted it to get back to factory power and then secured the adjustment locking screw to ensure that it won't drop again. Your pistol should leave today and you will get tracking info when it does. Please let me know if you have any questions.
Thanks,
Shane
Airguns of Arizona
Service Department
I can’t thank AoA enough for the great service and quick turn around time. From the receipt of the pistol to repair, took less than a week. If your pistol has this problem and is still under warranty, I advise shipping it back to where you purchased it and have it fixed. If not, you may want to investigate the hammer spring to see if it has backed out. I have seen videos on YouTube that show how to adjust the hammer spring, so you should be able to fix the issue after viewing one of these. I have had this issue develop on other PCPs and after eliminating the “usual suspects”, it was always the hammer spring backing out. I kind of assumed that this was the issue but with the pistol being under warranty, I did not want to chance mucking it up. The HW44 is a complicated piece of German engineering and I love mine dearly. I have killed more tree rats with this weapon than any other. The trigger spring adjustment is probably one of the least complicated adjustments to make and you should be able to accomplish it without much trouble.
I hope this information is beneficial to anyone experiencing the same problem. I know there are other issues that can cause velocity drop (probe seal, etc.), but if you have checked all those and the problem still exist, you may want to look at this.
Charlie
Hi Charles,
I wanted to let you know that your HW44 has been repaired and will be shipping back to you. The hammer adjustment screw had backed out so we re adjusted it to get back to factory power and then secured the adjustment locking screw to ensure that it won't drop again. Your pistol should leave today and you will get tracking info when it does. Please let me know if you have any questions.
Thanks,
Shane
Airguns of Arizona
Service Department
I can’t thank AoA enough for the great service and quick turn around time. From the receipt of the pistol to repair, took less than a week. If your pistol has this problem and is still under warranty, I advise shipping it back to where you purchased it and have it fixed. If not, you may want to investigate the hammer spring to see if it has backed out. I have seen videos on YouTube that show how to adjust the hammer spring, so you should be able to fix the issue after viewing one of these. I have had this issue develop on other PCPs and after eliminating the “usual suspects”, it was always the hammer spring backing out. I kind of assumed that this was the issue but with the pistol being under warranty, I did not want to chance mucking it up. The HW44 is a complicated piece of German engineering and I love mine dearly. I have killed more tree rats with this weapon than any other. The trigger spring adjustment is probably one of the least complicated adjustments to make and you should be able to accomplish it without much trouble.
I hope this information is beneficial to anyone experiencing the same problem. I know there are other issues that can cause velocity drop (probe seal, etc.), but if you have checked all those and the problem still exist, you may want to look at this.
Charlie
