Hammerli AP20 low velocity?

[little miss horrible]

We recently acquired an AP20 as a club pistol, and we've noticed that the muzzle velocity seems to be a bit on the low side ... in that it's very quiet and the pellets aren't so much punching through the target as tearing through it, which is giving the scorer a nervous breakdown. Not had the chance to chronograph it yet, but there's clearly something slightly odd going on.

We've had it from new, and it's always done this. It's doing it consistently, in that we're getting some decent grouping and scores out of the thing. It doesn't appear to be leaking air anywhere: we can't hear anything escaping, and it's holding cylinder pressure between sessions. The only time we've done anything to the mechanism since we've had it was to flip the reducer round to have the cylinder pointing in a more conventional direction. It doesn't appear to have any means of velocity adjustment, and there's nothing in the manual the suggest that it should have.

Any ideas, o lovely people of the internet? ::o)

[william]

Always impolite to answer a question with a question, but answering with 3 questions - that's another story.

1. Where did you get it?
2. Did you ask that person's advice?
3. If you're in the US, did you contact Larry Carter? He's been dealing in Hammerli since Moses crossed the Delaware (or was it Washington crossing the Red Sea - I get confused).

[little miss horrible]

We got it from the same local shooting shop that supplies various bits of rimfire kit, various airguns, and fills our dive bottle for us. We're in the UK.

[Rover]

Tighten or replace the striker spring.

[TenMetrePeter]

and ensure there is no oil particularly silicone anywhere near the striker (parts 47 and 78 in the diagram)
http://www.bisley-uk.com/products.php?c=556
I cant see any adjuster.
Striker hammers must be dry moly lubed never oiled. too easy to give the whole a "maintenance spray " and get it inside.

[m1963]

Perhaps send a private message to Uhlrich Eichstädt, the manufacturers European representative.

http://www.targettalk.org/memberlist.ph ... file&u=314

It is almost time for holiday, so a response may be slow in coming.

[David Levene]

Have you tried EMRR?

They are a (the?) UK distributor for Walther/Hammerli airguns.