sniper rifle chamber question

[Strake]

ive got a piece of metal pipe laying around 25mmx250mm would this be sufficient for a sniper chamber or would it lose alot of power. im after something that takes minimal to pump up to high pressures and is able to shoot a marble at around 700ft/Per sec.

[Carlman]

that would suffice i would say, although it still all comes down to the pressures you are using it at.

and what kind of metal pipe, is it even rated?

[Strake]

dunno its thick tho so i'd say it would be, i want to put it around 300psi in it.

[Carlman]

dunno is not the desired answer to a pressure rated question!

is it steel, copper, alloy ...?

[Strake]

Steel pipe..............................mesage to short lol

[Carlman]

i havnt personally worked with steel but it should be good, does it have weld down one side?

[MrCrowley]

300psi should be ok in steel. With a 1.5 metre barrel and a piston valve you'll easy get 700fps.

What valve did you plan on using.

[Strake]

nice thats good then the chamber will be longer when i weld the other section of pipe on up to the piston. also will a MIG weld be capable of holding pressure up to 300psi because i am going to weld everything together instead of buying all the fittings.

[The Kid]

from what i'm reading i would probably agree with Crowley that the steel would be able to hold 300 psi, do what he said and use build a piston valve and just out of curiosity are you using an air compressor or a pump.

cheers

[Strake]

either most probably a pump but i will use our air compressor when im lazy

[The Kid]

either most probably a pump but i will use our air compressor when im lazy

lol fully sick i dn't think i would b able to get to 300 psi very easily with a pump oh well anyways good luck with the sniper.

[Strake]

cheers mate. ill have to find a shock pump or something because i broke dads last one he still dont no yet.

[The Kid]

cheers mate. ill have to find a shock pump or something because i broke dads last one he still dont no yet.

kewl i was't thinking about shock pumps. btw not as bad a me i broke my dads $200 (i think) hammer drill

[Strake]

thats no good did u pack it up and wait for him to use it and blame it on him thats what i done with his pump lol he will no i done it tho.

[jackssmirkingrevenge]

at that size it should be a reasonable chore to take it to 300 psi with a shock pump, and with a decent barrel length and valve your velocity target for a marble would be realistic.