Weihrauch HW100 T has become completely inaccurate

[Norfolkngood]

There is a thread about this type of issue on the Weihrauch Owners Club website. I suggest you visit the site to get an insight of what happened in their case. It’s in the PCP section, page 3 and the contributor is Mitchell 1992.
They cleaned the barrel and it still shot badly and then it suddenly changed to a tack driver after it had leaded in, but only after several hundred shots. I wouldn’t necessarily blame your gunsmith, most can strip down guns but air gun problems are harder to pin down and rather fickle at times. If he is an airgun tuner or specialist he would have more insight than a normal run of the mill gunsmith.

[Lavant_Lad]

Your barrel appears to be the culprit, give a really good going over with a wire bush, it cant make it any worse.

[jepho]

Your barrel appears to be the culprit, give a really good going over with a wire bush, it cant make it any worse.

Thanks again. Yes, I am coming around to the idea that the barrel has somehow developed a fault. My gunsmith should be able to make the necessary tests and then tell me what the solution will be.

[jepho]

There is a thread about this type of issue on the Weihrauch Owners Club website. I suggest you visit the site to get an insight of what happened in their case. It’s in the PCP section, page 3 and the contributor is Mitchell 1992.
They cleaned the barrel and it still shot badly and then it suddenly changed to a tack driver after it had leaded in, but only after several hundred shots. I wouldn’t necessarily blame your gunsmith, most can strip down guns but air gun problems are harder to pin down and rather fickle at times. If he is an airgun tuner or specialist he would have more insight than a normal run of the mill gunsmith.

Thank you for the very helpful response.

I visited the WOC site and pages suggested by you. The issues discussed certainly seem to mirror my own experiences. The first gunsmith I had used was less than clear about what the issue was. My BS detector went into overdrive when I was told that the moderator was bent out of true. (it wasn't) The fitting of the brand new Huggett moderator, as suggested by the gunsmith, made no difference; nor did firing the gun without a moderator.

There is no shame in not knowing but true ignorance is the refusal to learn anything new. He was supposedly an airgun expert, whatever that might mean. I paid a total of £115 to be no nearer to any sort of answer. The gun has now gone to someone locally, who is recognised as an excellent gunsmith where air rifles are concerned.