how much air do airguns use per shot?

[the growler]

My daystate mk4is 177 uses around 1bar/shot at 11.5ftlbs. My mate has a daystate airwolf mvt .22 and he says his uses just over 1bar/shot at 40ftlbs... what is the volume! / shot of other rifles?

[Biker_Bob]

It depends on cylinder size.
My Ultra has a very small cylinder and goes from 200bar to 90bar in 40 shots.

[Stuart_B]

Depends on the caliber, power output and efficiency of the rifle ie its valve etc.

[Rich]

I measured the air from a Daystate LR90 in 22 cal, running close to 12fpe, and I found it was about 140ml of free air per shot. That was 20 or more years ago, and I think rifles are quite a bit more air efficient these days.

[the growler]

Biker bob, your gun uses 2.75bar/shot.

[harvey_s]

It depends on cylinder size.
My Ultra has a very small cylinder and goes from 200bar to 90bar in 40 shots.

What Bob says re. cylinder size and my S200 in .22 drops about 2 bar per shot

[Geoff555]

Hello Walther R8 running 11.5 ft-lbs (.22) I recon is 1 bar per shot. .177 at 11 ft-lbs. about the same, with in the limits of the gauge accuracy.
Cheers.
Geoff.

[Rich]

Strictly speaking, a bar is a measure of pressure, not quantity. A given rifle will use the same volume of air per shot, regardless of the size of the reservoir. A small cylinder is depleted more quickly than a large one, so to express the air usage as bars dropped could be misleading.

[the growler]

Sorry to be misleading anyone, my gauge on my daystate mk4is is electronic. And in bar, so I can tell how much air it uses per shot.

[Rapidnick]

My daystate mk4is 177 uses around 1bar/shot at 11.5ftlbs. My mate has a daystate airwolf mvt .22 and he says his uses just over 1bar/shot at 40ftlbs... what is the volume! / shot of other rifles?

I'm very impressed with 1 bar per shot at 40 ft lb. I reckon my FAC regulated Rapid running at 32 ft lb uses between 2 and 3 BAR per shot. This means from 232BAR down to 140 BAR when my rifle goes 'off the reg' I am pleased to get 3 magazines (36 shots) which is more than enough for a hunting trip.
Not that it matters because we are dealing here with pressure drop but I use a 280cc bottle rather than the larger 400 or enormous 500cc bottles.

[RobF]

My daystate mk4is 177 uses around 1bar/shot at 11.5ftlbs. My mate has a daystate airwolf mvt .22 and he says his uses just over 1bar/shot at 40ftlbs... what is the volume! / shot of other rifles?

If your gun uses exactly one bar, then the volume is the volume of your cylinder. Same with your mate's airwolf.

I think the DSmk4 IS has 144 cc cylinder. So yours uses 144cc per shot if it uses 1 bar.

If your mate has a 400cc bottle and uses 1 bar, 1 shot uses 400cc. If he has a 500cc, 500cc.