300 Bar Charging - Weihrauch HW100

[alanl]

Just bought an HW100s and I am looking for a 300 bar charging kit, I don't know whether to buy a bare bottle then add the valve, gauge etc, or whether to try and get the complete kit. What do I need, there is a din adaptor supplied with the rifle which is rated at 200 bar

Buy a airgun specific bottle, Midland Diving Equipment supply many dealers, http://www.midlanddiving.com/£153.35 for a 3litre 300 bar new bottle and valve.
The adaptor you have will screw directly into the valve assembly on the bottle top, but, it is for a 232bar valve, hence is around 5mm too short for a 300bar bottle.Sandwell Field Sports sell an insert to overcome this problem,which is rather overpriced IMO at around £10.All it is is a small spacer with an o ring on one side.
Dont worry about the 200 bar rating stamped on the adaptor, the gun is filled to 200 bar, you wont be wanting to put it over that, in fact I think there is a valve inside the adaptor that automatically exhausts if the pressure gets too high - there is a vent hole on the side of it.
Alan.

[Stan]

I got a new adaptor for my HW100 through my local gunshop who in turn got it direct from Hull Cartridge, cost around £14.00. Also I have found that it is better to have the gun charged to around 190 bar rather than the 200 bar max recomended by HW. If you charge to the max the first few shots are underpowered.

[Norfolkngood]

Probably get flamed for this but I put a couple of 8mm bright steel washers in front of the adapter and then fill to 200bar. Some people use a single bonded (dowty washer) but not sure of the size, probably a 1/4" BSP.