Thread: How to get fast twist barrels in NZ

Originally Posted by akaroa1

@Bill999
Sound silly
I like silly projects because you learn things you didn't know

I have a mate who makes barrels commercially and has the barrel drills for what you want.
I just know he won't have the rifling buttons that fast because he's tapped out at 1:7 on the 30

But he might be able to get much faster buttons.
How much faster i don't know
But he will be visiting me today or tomorrow for a toy swap around and i can mention it to him

You're welcome to pm me and we can make direct contact and i can fill you in on who and what and where

@homebrew.357 has a rifling machine, maybe the right solution for those insane twist rates. A button has got to be slipping a bit at 1:3

Originally Posted by Cordite

@homebrew.357 has a rifling machine, maybe the right solution for those insane twist rates. A button has got to be slipping a bit at 1:3

I did ask but there was some shortfall

I hear rifling buttons are pricey

Originally Posted by Bill999

I did ask but there was some shortfall

I hear rifling buttons are pricey

Not super pricey, can get some from china, get from ukraine or somewhere too (both on ebay) which the latter claim will withstand being hammer driven. May need an import license in the current clampdown victimisation of NZ shooters post Chch. Heard of someone needing an import permit for a .22WMR chamber reamer!

Problem with buttons as far as I understand it from the bumf on the sites is that you need a rather fat walled barrel for the button to work (if you do it on a thinner walled barrel the barrel expands around the button rather than accepting a groove indentation). The barrel is subsequently turned down to the preferred contour. Probably some do button rifling on thinner walled tube using different calculations, but any diameter barrel can be accurately rifled with a traditional rifling machine using cutters rather than buttons.

China: https://www.ebay.com/itm/5-5-11-43mm...l/232877632646
Ukraine: https://www.ebay.com/itm/Rifling-But...y/152951198885