Help please

[bgaltd]

Hi,

My guess is that the previous owner has fitted a stronger hammer spring off t'internet in order to up the power somewhat and it's now using a lot of air per shot. Put an original spring back in and adjust the power with a pellet like JSB/Daystate heavies and you should be well within the legal limit for other pellets. Check that the firing pot is set correctly (57mm IIRC) while you are there. For reference my own S410 in .177 returns 60 'sweet spot' shots within a spread of 12fps from a 145 bar fill and 85 shots within 20fps from a 158 bar fill.

Mark

this is a good place to start , a full strip down to check would be the best thing to do .

[bgaltd]

Is 57mm the length of the threads that should be showing?

56-58mm is the average so 57 is a good place to start .

[Hairybiker59]

Have been and got the original spring and have the rifle in bits,the previous owner told me he'd done a clean and polish of the hammer and rail,don't look like it to me.

[Hairybiker59]

Was going to put pic up but it's saying file is too big

[Mark112]

Hi,

The firing pot dimension is the distance from the flat end of the pot to the face of the firing valve body (i.e the length of brass visible in my photo). Remember the pot is locked in position with a small grubscrew and a tiny (easily lost) nylon ball thingy under that that grips the firing pot's threads. This grub screw is hidden under the pressure gauge.

FiringPotSmall.jpg (163.08 KiB) Viewed 2157 times

Mark