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I wanted to ask you guys for ideas on what to shoot with a 15mm barrel, apart from potatoes? Batteries with some tape around them work great but i dont feel like wasting them around the forest as they are special waste(is it called that?).
Oh, and i have yet to try marbles.

Ball ammo.

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Welcome to Spudfiles.

I'm guessing your using 15mm copper right?
Well i've searched high and low but have found few things.
Your best bet just making screw darts.
Make a paper cone, cut it to fit in the barrel, And screw a screw in with the head facing out.

qwerty wrote:I'm guessing your using 15mm copper right?

Not if he's talking about AA batteries. They're too big for 15mm copper.

Not if he's talking about AA batteries

It depends whether we're talking about ID or OD.

Though 15mm OD copper pipes here have ID of 13mm - so most AA batteries fit them perfectly

POLAND_SPUD wrote: 15mm OD copper pipes here have ID of 13mm

Is that type K, L or M? Or neither?

here they just give OD and wall thickness (or ID) in mm so I can't tell

I think he's using AAA batteries with tape wrapped round them.
I used to use them for a while too.
I think the ID is about 14.3mm

Yes its 15MM copper, and i meant AAA batteries when talking about my ammo. I definetly have to try the paper dart thing.
@POLAND_SPUD I dont know about your batteries but AA doesnt fit my barrel. However, i saw some french dude use AA batteries in his 15MM barrel(he told it in the video comments). So i wonder if some companies produce different sized AA batteries?

Easter Egg wrote:So i wonder if some companies produce different sized AA batteries?

As the "AA" is a standard definition of the size I doubt that.

More probably, he used a different measurement. If his was an internal diameter measurement, then it would fit AA batteries. As 15mm copper is an outer diameter, the two wouldn't be the same size internally.

some AA batteries are exactly 12.7mm while others (mostly cheaper ones) are 13mm or larger

POLAND_SPUD wrote:some AA batteries are exactly 12.7mm while others (mostly cheaper ones) are 13mm or larger

Odd, AA batteries are normally more like 13.5 or 14mm. And that includes the crazy expensive disposable lithium ones I sometimes use for my camera. Cost about 10 times what normal batteries do. (On the upside, I've been using the same set since July, and they're still not even half way to flat.)

@FighterAce: UK pipe sizes (being metric) are not equivalent to US sizes.
But as a rough rule, if compared to their closest diameter Imperial neighbour, they generally fall somewhere between M and L in dimensions.
They've been worked differently though, so don't assume complete equivalence of working pressures.

It's been a LONG time since I took a look at this site, but I bought a .395 Lee round ball mold from ebay, and cast MANY bullets. It does fit perfectly in a 12mm copper tube. And I think they are also avalible for 15mm copper tube. Also it's very useful to make buckshot. I call it 10×10 buckshot. 10 bullets of 10mm in a 26mm copper pipe with 40 bars of pressure

Jack_Hogg wrote:Also it's very useful to make buckshot. I call it 10×10 buckshot. 10 bullets of 10mm in a 26mm copper pipe with 40 bars of pressure

I think you owe us some videos