Do you have to fill a Bottle then use that to fill a rifle?
If you can directly fill the rifle cylinder, then you save the price of a dive bottle.
I will let other work out the maths for that.
Do you have to fill a Bottle then use that to fill a rifle?
If you can directly fill the rifle cylinder, then you save the price of a dive bottle.
I will let other work out the maths for that.
The cost of the cylinder has not been included
It's comparing the cost of refilling a cylinder you already own, to buying a pump which then saves the refill costs.
Some people DO need to fill a cylinder because they only shoot away from home & need to refill the rifle during the day (& in that case the cylinder still needs to be tested)
What I do not know is whether these pumps provide DRY air, certainly they don't have filter packs built in, although they sell them at about £160,
so I suspect they might just use a centrifugal/cyclone moisture trap which will reduce moisture content, but is far from DRY.
Thanks for the replies chaps, not unduly worried by the economics but the dry air question is of more concern.
if you have someone quite close and convenient with a dive bottle compressor that's fine but the place where I've had mine filled in the past is only open quite limited hours and I think he's hoping to retire completely sometime soon.
Don't bark if you can't bite!