TargetTalk

Hi guys.

This topic is effectively following on from a thread started almost a year ago (http://www.targettalk.org/viewtopic.php?p=60532).

My LP 10 started producing very raggedy holes, so I chased up the link above, bought a chronometer and chronyed the pistol at 420fps with 0.52g pellets.

Problem discovered.

So I followed the pearls of wisdom in the linked thread - or at least tried to.
Two departures from what I expected in that thread. First, the grub nut (#10) seems to hold a threaded collar (#21) in place, rather than the screw (#20). The collar has a slit on it's face: should that have a specific orientation (the exploded diagram shows it at the 6 o'clock position)?
Second, if I screw in screw #20 a little I end up not being able to cock the pistol. that doesn't seem right to me.

For fear of doing some damage I have reassembled the whole thing with a slight modification of the screw position - I now get 459fps out of it.

Any advice on these issues?

Finally, <499fps is legal in the UK - I assume therfore that all airpistols are tuned to sub 499 on these shores. Given that posters on the linked thread are talking about 525 fps I wonder (a) whether this is achievable or (b) desirable.

What implications does that have for the 2012 Olympics, given that 500fps + pistols will be brought into the UK?

Mike S-J wrote:Finally, <499fps is legal in the UK

I am not sure where you got that idea from. The actual limit for air pistols is 6 ft lbs. From memory that works out, with normal pellets, at well over 500fps.

My chronometer (cb-625) is hard-wired with that setting. The manufacturer is probably erring on the side of caution then.

Isn't 500fps the limit for Cananda?

Have you tried putting the correct pellet weight into your Combro?

yeah - its all correctly set up. At 499 it reads "legal" at 500 it switches to "FAC".

It does that regardless of the pellet weight, so I guess they are being over-cautious.

Any advice on the adjustment screws?

Anonymous wrote:yeah - its all correctly set up. At 499 it reads "legal" at 500 it switches to "FAC".

It does that regardless of the pellet weight, so I guess they are being over-cautious.

If you have reduced the pellet weight from the default 15 grain down to the more realistic 7-8 grain and also adjusted the "legal limit" setting to 6 ft lbs, and it is still changing to FAC at 500fps then I would suggest it's faulty.

Try ring the extremely helpful guys at Combro.