Possible to avoid a floating barrel with bolt action?

[Truck]

Hey guys, I am fairly new to spud gunning, however I have done my research, and I have been having trouble finding a solution to my problem.
This is to have a bolt action breech that does not leak, and the barrel is not 'floating'.

So far I have not found anything on this specific problem, and any help would be greatly appreciated.

[POLAND_SPUD]

well you should have read this thread >> http://www.spudfiles.com/forums/uhmmm-2 ... ter,0.html

that works the way you want it

[evanmcorleytv]

"O" rings are you're best friend in this situation..

[Truck]

well you should have read this thread >> http://www.spudfiles.com/forums/uhmmm-2 ... ter,0.html

that works the way you want it

Thank you! I have come up with a design that I think will work, I will post pictures up soon

[jackssmirkingrevenge]

[Truck]

Thanks JSR, but i was looking at a design more like the one posed below, and critiques would be greatly appreciated, where I can improve the design etc!

I am having trouble uploading to here is the image.

What I was going for here is to have three pieces of copper or brass tubing the middle being the barrel with a diameter of 13mm, the second being the bolt tube with a handle attached to it, and the third being the bolt guide and casing, this has epoxied discs at either ends and this will hopefully minimize leakage.

[jackssmirkingrevenge]

Looks good, the "sleeve" bolt has been used before successfully. Heck, there even is aprimitive instructable

[Truck]

Looks good, the "sleeve" bolt has been used before successfully. Heck, there even is aprimitive instructable

Thank you

Haha, that instuctable is so dodgey! But thanks, I seem to get the idea now

[jackssmirkingrevenge]

Here's a better rendering from 3D-master-but-soon-to-have-keen-competition dewey





Also, instead of a sliding sleeve, you might want to consider a rotating one as suggested here.

[Truck]

Wow, simplicity is beautiful isn't it?

That rendering is quite handsome, would you not agree I like the idea of having just a rotating breech load, but I have some queries:

1. Would I need to make use of O rings? and if so would the rotation become difficult and less ergonomic?

2. Would it leak/cause significant power dampening on the rifle?

Sorry for all the questions, I just want this to be theoretically beautiful before I put it into practice.

[jackssmirkingrevenge]

1. Would I need to make use of O rings? and if so would the rotation become difficult and less ergonomic?

Assuming the sleeve is a good tight fit, I would say o-rings are not necessary - you might lose a couple of fps but nothing you would notice without a chrony.

[Truck]

Assuming the sleeve is a good tight fit, I would say o-rings are not necessary - you might lose a couple of fps but nothing you would notice without a chrony.

Lovley, I want to say thanks again JSR, you have been a massive help!!

[Daltonultra]

If you are making a copper cannon, there are even ready-made sleeves available in the form of repair couplings. Any plumbing supply store should have them for all sizes of copper pipe, and some of the big-box hardware stores have them for 1/2" and 3/4".

[Truck]

If you are making a copper cannon, there are even ready-made sleeves available in the form of repair couplings. Any plumbing supply store should have them for all sizes of copper pipe, and some of the big-box hardware stores have them for 1/2" and 3/4".

Oh thanks, is this applicable in Australia? Or would you not know? I had a look in my local hardware store and they have a lot of copper piping, and fittings. I ended up buying the 12.7mm copper pipe, so would the next size up be 19.05mm with around a 13mm interior diameter?

...and perhaps a loading system like this

The Diagram is pretty self explanatory...

[jackssmirkingrevenge]

...and perhaps a loading system like this

Add a cam system and you can make it pump action