For a 2" barrel take 2 1-1/4" female threads PVC, and a section of 1-1/4" steel pipe and take the PVC threads and screw it on to the pipe, then sand off the ridges off of the PVC so that it fits inside your barrel.

Then fill with sand, concrete etc and it make excellent ammo for destroying things.

I might see how many full 12g I can put in a 3" barrel and see how that works out. I don't know that would be particularly advisable. If you can get one up to a reasonable speed and hit it against a hard surface well enough, I think that should be manageable, but I'd still want a large target, and ...

What type of valve(s) are you using?

For a C:B of 1:1.5 its 487.25"

I was logged in, the most I saw was like 25 people and most of them were unregistered and hidden.

Its just like trucks now a days, everything is computer controlled and unless you have a degree in computer engineering you cant work on them. That is why I will never buy a new vechile. As for spud guns they are going the same way, grated that not everyone will have a CPU on theres but there will b...

bigbob12345 wrote:I agree with WOW!! you dont know how well it will hold the PVC stuff together so just go buy a new can its a trip to the home depot and 4 bucks.

And if your like me you will end up buying parts for a whole new cannon too.

It looks great! I like the idea of the couplings in the chamber, don't really need it, but as it was said before if your happy then your money! Only thing I would suggest is the barrel/chamber support. Just keep doing what your doing with the propane and later on change it if you want. Keep up the g...

jackssmirkingrevenge wrote:There's so many sections here Fred, surely your creations must fit in one category or another. And don't worry about them being lost either, the good stuff is always being dragged up or linked to

x2

I used old cement before on a cannon and the fitting blew apart at the glue joint because of it. So after it goes bad I just get a new can of it. It better then chancing it.

Hotwired wrote:Torch it.

It's not likely to get any harder if it's old sealant but it could become more brittle and crumble with excessive heat.

Make sure you're outside at the time and don't breathe any fumes.

DO NOT
You cant you will melt the seals in the ball valve.

I might see how many full 12g I can put in a 3" barrel and see how that works out.

Dont freeze the pipe or the valve, that could cause cracking when you are trying to get it off.

Boil up some water and soak the valve end in it for 5-10min and try to get it off then.

Looks great! Great job with the primer.

Mine would be a fully automated hybrid.




And its closer than you think

Its a good start but there are others that are more accurate. Also as Jimmy said air drag as a super big affect on the different projectiles, and also the wind factor, if its blow off course it will mess with the time in turn with you results.

Its a good start.