i need help making a pellet gun

[beastmode986]

ok so i need help making a ball bearing gun or pellet gun i have made cloud bbmgs in the past along with air cannaons and a spud gun but i want to make a gun that shoots eother a 9mm size ball bearing or a .22 pellet either semi auto or bolt action but i want it to have alot of power but im having trouble deciding what valve to use and how it would opereate any suggestions

[killerbanjo]

Have a look in the how to section. Theres a good read about making a hammer valve out of a blowgun, perfect for 22s

[jrrdw]

How about posting some of your ideas so we can get a better idea of what your thinking?

Wouldn't hurt to showcase some of you prior cannons either...

Welcome to Spudfiles.

[beastmode986]

Thanks
I would like to design my gun to shoot a larger projectile than a .22 possibly a .357 or .25 or.45 I don't want to have an extremely complicated build though because I'm kinda new to all these valves and stuff I know decent amount of stuff though I would like to build something powerful either bolt action loading or magazine fed I was thinking of using a hammer valve or slide valve but I also think It would be under powered so I was thinking of some sort of single shot mechanism maybe a modded sprinkler valve I'm not sure though I would probably use either brake line for a low caliber and conduit or copper for larger calibers I need some opinions on what valve I should use and what ammo would do a lot of damage I would be doing target practice a lot but I like air guns with a lot of power. I wanted to make a semi auto .357 but I think it would be weak with a hammer or slide valve. Opinions?

[jrrdw]

Well we don't like to spoonfeed here, we want to see your idea's and then offer idea's to help you...

[beastmode986]

Well I'm leaning towards making a semi auto .356 I want to either use a hammer valve or slide valve with a we've I would come up with some type of magazine assembly. what valve should I use to get a decent amount of power? The .356 weighs about 105 grains. is that to heavy? I would probably make a air chamber out of 2 or 3 inch copper or galvanized pipe and a Schrader valve
I've heard that slide valves can leave a lot to be desired so I'm leaning towards a hammer valve

[sagthegreat]

Have a look in the how to section. Theres a good read about making a hammer valve out of a blowgun, perfect for 22s

I was looking for this same exact idea, i cant find it, could someone post a link

[killerbanjo]

http://www.spudfiles.com/forums/hammer- ... 23202.html

here you go, it was on the first page of the how to section oh well, i guess we all miss things somtimes

[jackssmirkingrevenge]

http://www.spudfiles.com/forums/semi-au ... 23626.html

Nowt wrong with slide valves.

[beastmode986]

Would that slide valve setup be able to shoot a .356 caliber object weighing 105 grains at 300 or more fps

[Zeus]

Would an elephant be able to find water in a tree stump if the moon was full?

There's a lot of variables, download GGDT and try modelling it yourself. If you search for "GGDT help" and terms like that, you'll find threads with good advice on how to use GGDT.

If there's anything you're not sure about, feel free to PM me.