Quote Originally Posted by echo1974 View Post
Wouldn't it be safer to have to go through the hassel of using a large 12l divers bottle, filled up at a divers shop? At least you can be more sure the air hasn't got moisture in it, to pass on to all of your air guns? I ask this because ive always wondered to get one these cheap air compressors to fill a 3l divers bottle?
Good question echo1974 and this is how I started, but not for long! Keep in mind that you cannot use all the available air even in a 300 bar bottle; you are most interested in the “top bit” e.g. above for example 250 bar and above (fx air gun bottles are typically filled to 250 bar) so unless you have 250+ bar in the divers bottle you cannot fill completely your bottle on the air gun, but of course you can sit at the bench and tether the dive bottle and use it down to the air gun regulator pressure. Then you may to travel to have bottle filled, (£) and possible pay for inspection yearly. Also remember the dive bottle will warm up during filling and even if filled to say 300 bar will loose pressure when cooled to air temperature ( unless allowed to cool and then being brought back up to pressure). However, it still might be worthwhile if you have a low powered gun or do minimal shooting. I “chew” air with a 76 fpe Crown and a 150 fpe King so a decent air compressor works for me; circa 2 minutes 30 seconds to fill my 10 litre carbon fibre bottle from 250 bar to 300 bar. Anyway, just my 2 pence/cents worth.
Cheers
pjinoz