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Rifling small bore barrels

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Rifling small bore barrels

Unread postAuthor: rna_duelers » Fri Apr 14, 2006 11:00 pm

I have just rifled my 3/4" barrel on my pneumatic using a piece of dowel that was a good fit and having hammerd nails into it and gridning them back to just points that etched the bore of my barrel and i spun it as i was pulling it and it worked really well with a carrot slug it spirreld through the air nicely and didnt tumble until it reached the end of it flight parth.
Ill have pics soon in about and hour or so.

EDIT: i need somewhere to reduce the size of my photo's,any help would be great thanks.im not 2 good with computers...sorry

Ohhk and yes i did do it by hand and i live in australia,not missisipi(spelling:S).Well it is very consistent and i did it extremely slow as to get it perfect and also becuase it takes alot of strenght,its quite hard to pull through you know.I out my pipe in a vice with the bushing acting as a stopper so it wouldnt pull through and scrape my barrel,i thought it would of been really hard to do but surpirisingly it was easer then first throught.

Now with the dowel i used 4 nails they where 20mm small tacking nails.and i set them as to cross through the dowel on four different points as to make a + through the dowel and only have about 1-2mm of nailhead showing this is why you use a tight fitting dowel,and i off set each nail about 15mm from each other along the dowel length wize as not to crack the dowel and so the nails dont hit each other but trying to get the nails to go in straight,that was a fun i can tell you.then it was up to my trusty dremel grinder to grind back the protruding end of the nail(not the head).Now first thing to do is to test it on a small section of same size pipe as not to ruin your good barrel and test it,you may need to do some fine tuneing to the nails head with a dremmel to set the depth not to deep and also to make it easer to pull through

BUT WAIT!!!joel said it was impossible to rifle small barrels,otherwize he would have them for sale...well hehehe i made my own:P and it works,i will get some more pics of the proccess and post soon,but im school holidays so i might not post right away because i have alot of things to do(drink cola,watch tv,sleep etc etc)
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Attachments
pic101.JPG
This si my 3/4 rifled barrel i did it myself :P
pic101.JPG (10.25 KiB) Viewed 2046 times
pic102.JPG
This is my rifleing tool i use to rifle small barrels
pic102.JPG (5.87 KiB) Viewed 2045 times
pic103.JPG
this si the cannon my rifled barrel is used on,i have only been able to fire carrot slugs and such due to that painballs are expenisve and hard 2 were i live in australia
pic103.JPG (19.1 KiB) Viewed 2044 times
Last edited by rna_duelers on Tue Apr 18, 2006 5:15 am, edited 4 times in total.
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Unread postAuthor: screamingflea » Sat Apr 15, 2006 8:52 am

To reduce size of your pictures, go the paint and then go to Image: stretch and skew. Do horizontal and vertical in = percentages and there you go. I like that idea, I thought about tryo to rifle by somehow mount sharp tips slightly larger than the ID of the pipe on a dowel and then hook the dowl toa drill. Like the bore in the how-to section.
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Unread postAuthor: Mini Khan » Sat Apr 15, 2006 3:08 pm

put up pic i must see how u did it
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Unread postAuthor: Brian the brain » Sat Apr 15, 2006 11:50 pm

This is something everybody wants to learn so get them darn pics up haha
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Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Unread postAuthor: Andrew52 » Sun Apr 16, 2006 12:16 am

if u had a dowel for 3/4" cpvc would rifling a pb barrel have affect on the paintball dumb question but the shells are hard so idn if it would do anything
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Unread postAuthor: boilingleadbath » Mon Apr 17, 2006 12:13 am

A paintball is a sphere anyways - riffling has no effect on the tratractory of a sphere, even if it did work at spinning it, which I doubt.

(Ok, slightly wrong. But having it slide over to one side (slightly) as it falls is a bad thing anyway. And I do mean slightly... although I'm not going to calculate it, I don't think you'd notice it)
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Unread postAuthor: rna_duelers » Mon Apr 17, 2006 5:53 am

Ohh and sorry!i totoaly forgot about this post and thank you screamingflea now i can post pics!becuase before they where much to big.if u have any question on it just ask.
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Unread postAuthor: boilingleadbath » Mon Apr 17, 2006 11:57 am

The twist rate is surprisingly consistent... surely you didn't do that compleatly by hand.
Could we get a description/pictures of your setup?
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Unread postAuthor: plumpthumb » Mon Apr 17, 2006 1:50 pm

Hate to disagree about rifling having no effect on a sphere but if you will stop and remember the muzzle loading was made far more accurate and given longer distance with the invention of rifling-those weapons used balls. That's why they are called rifles.
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Unread postAuthor: screamingflea » Mon Apr 17, 2006 4:23 pm

Glad to help, anywho, the I have to agree with BLB, the twist rate is suprisingly consistint, I might have to give this a try. A carrot slugger sound like fun.
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Unread postAuthor: CS » Mon Apr 17, 2006 6:41 pm

Holy Sh*t!

Either you got the steadiest hand on this side of the Mississippi, or you didnt use your hand... Sorry for the third echo, but how did you do this??? (This post doesnt state anything new, only for adding to the urgentness.)
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Unread postAuthor: sam_516 » Tue Apr 18, 2006 7:30 pm

Ahhhhhh that is mad!how did you do it so steadily?????i thik im gunna rifle my 1/2inch barrel now.
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Unread postAuthor: Brian the brain » Wed Apr 19, 2006 4:06 pm

Wait a cotton-pickin' minute!! You could twist tape around the dowel in a steady spiral and tape a marking in the end of your barrel and just follow the spiral...as a guide!!!( or cut out the spiral and use a screw as the guide!!)

mmm
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Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Unread postAuthor: rna_duelers » Wed Apr 19, 2006 7:22 pm

Now thats an idea,i'll do that next time thanks brain.
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Unread postAuthor: beebs111 » Wed Apr 19, 2006 8:28 pm

the muzzle loaders actually didnt use spheres... those were muskets, my friends dad has a muzzleloader that is rifeled, and i have one of the bullets, it looks like a very stubby .50 cal round which in fact it is :roll: :wink:
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