High Pressure Pumps

[Solvo]

I based that on 60 fills per bottle with is about what I expect for my gun, it's only an estimate though so yes, the maths is a bit iffy, but there's a lot of variables and it doesn't need to be that accurate really.


I just worked back from the compressor price. Say £300 inc P&P
I pay £7 a fill for 300Bar 12L, some people get it for £3, some have to pay £10+ then there's fuel, so £7 seems to be a happy median.

£300 / £7 = 42.9 = 43
So you can at that estimate fill the 12L tank 43 times for the cost of the compressor.
At 60 fills per tank you get 43 * 60 = 2580
Even if you estimate for 45 fills per tank you still get 1935
So given the number of assumptions & estimates I think 2000-2500 refills of the rifle is a pretty fair figure for the purpose of this discussion.

It gets better if you compare to a manual pump, which would be £80-£150 and exhausting work, certainly not recommended for the start of a shooting session. Coupled with the manual pump giving a comparable quality of air it's a lot more tempting.

[iwalk]

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.

[angrybear]

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.

[WILBA]

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.

Can't you buy an inline drypack type filter to use with these compressors?

[angrybear]

Can't you buy an inline drypack type filter to use with these compressors?

Yes, I even say so in the post you quote , didn't you read it they're about £160.

[Dead-eye Dick]

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.