I want to build a pneumatic cannon and I have some cool ideas but I don't have much experience with them.
I want to know how much pressure/air volume you need to achieve a 300 meters range comfortably (so no shooting at a 30-45 degree angle).
I would also appreciate some tips on making the cannon accurate and on achieving consistent velocities.
My goal is hitting 1x1 meter target at 100 meters with the first shot since it seems a reasonable range yet it's not so easy to achieve as to be boring.
Thanks in advance!
How much velocity do you need to comfortably reach 300 meters range with a cannon?
-
mrfoo
- Specialist 2
- Posts: 245
- Joined: Wed Apr 29, 2015 11:05 am
- Has thanked: 65 times
- Been thanked: 70 times
At an average walking speed, it'll probably take you between 3 and five minutes, longer if it's uphill. The limiting factor is going to be how heavy the cannon is, but you can probably mitigate that by fitting it with wheels, at that point it's all down to terrain.
Sensible answer, it depends, amongst other things, on what objects you're trying to propel. A marble is different to a golf ball is different to a chunk of potato is different to a melon or a bowling ball.
Sensible answer, it depends, amongst other things, on what objects you're trying to propel. A marble is different to a golf ball is different to a chunk of potato is different to a melon or a bowling ball.
-
jimmy101
- Sergeant Major
- Posts: 3193
- Joined: Wed Mar 28, 2007 9:48 am
- Location: Greenwood, Indiana
- Has thanked: 4 times
- Been thanked: 11 times
- Contact:
300 meters is a long way.
Remember that a pneumatic is probably going to be operating at less than 150 PSI, which is the max pressure of a typical shop compressor. Compare that to a typical 0.22 rifle that has an effective range of about 150 yards. That low power rifle operates at twenty thousand PSI. So you are going to be pressure limited.
As to hitting anything at 100 yards, that will be difficult without a rifled barrel or a aerodynamically stable round (bulletss are not aerodynamically stable).
Remember that a pneumatic is probably going to be operating at less than 150 PSI, which is the max pressure of a typical shop compressor. Compare that to a typical 0.22 rifle that has an effective range of about 150 yards. That low power rifle operates at twenty thousand PSI. So you are going to be pressure limited.
As to hitting anything at 100 yards, that will be difficult without a rifled barrel or a aerodynamically stable round (bulletss are not aerodynamically stable).
