barrel Crowning tool

[Nismojunky]

where can I find a barrel crowning tool, I want to cut my sks down a few inchs and thread the end? anyone know where I can get these tools?

 

[twosmokinspades]

Brownells. Can do this as well.

https://m.youtube.com/watch?v=b43odFm0mrI

 

[twosmokinspades]

Brownells. Can do this as well.

https://m.youtube.com/watch?v=b43odFm0mrI

 

[tiriaq]

Cut it down a few inches?
How many would be a "few inches"?
Barrel is 20". Below 18 1/2" it becomes restricted. Below 18", prohibited.
So how many inches are you going to cut it down?

 

[yomomma]

If you can make it to Hamilton, I can do the crown for you.

 

[Disco Bob]

If you can make it to Hamilton, I can do the crown for you.

What happens when you don't crown it after you cut it? besides the cosmetics issues are their performance issues?

 

[yomomma]

What happens when you don't crown it after you cut it? besides the cosmetics issues are their performance issues?

Its not the end of the world.

 

[Nismojunky]

18.5" then adding a brake, with the brake on the stock length its a bit long, taking that 1.5" off then adding a brake will keep me in spec

 

[yomomma]

This is the unit I have.

 

[Disco Bob]

This is the unit I have.

How much is it and where can I grab one locally without having items shipped from the USA? Thx

 

[yomomma]

How much is it and where can I grab one locally without having items shipped from the USA? Thx

Can't. Either Brownell or directly from Manson

$140 US

 

[Disco Bob]

Can't. Either Brownell or directly from Manson

$140 US

Thank you!

 

[220]

You can not add a brake to get 18.5 in

 

[yomomma]

You can not add a brake to get 18.5 in

He wants to cut to 18.5 then add the brake

 

[Suther]

He wants to cut to 18.5 then add the brake

Yes. He says break + stock length is too long. Thus cut first to 18.5". OP check your metric to imperial conversion for the exact length it must be above (I want to say 18.5" is just barely under the actual length required?), and don't forget to leave a bit extra if you #### up and need to either cut it again or make it square.

Lots of people do crowns with a brass screw and valve lapping compound rather than buying expensive tools. Considering the accuracy of most sks, I would try that before I spend hundreds on a special tool.

 

[sawzall]

How much is it and where can I grab one locally without having items shipped from the USA? Thx

I bought that exact Manson crowning tool from Bighorn Sales. He’s a vendor here. I think his name is Gary.

 

[Johnyy]

 

[BCrecce]

For an sks...hacksaw, belt sand true, brass carriage bolt with slotted head chucked up with valve lap compound, thumb with some 1000 grit and oil then finish the inside crown edge with a dremmel rubber compound polishing tips(come in many shaped sizes) done a few like this. Your not gonna hurt accuracy on these things onless you chop it on an angle and send the POI into the next province. If its a $1000 rifle and you plan on doing many down the road buy the crowning tool.

 

[AP]

That Manson tool looks pretty good. The Brownell tool can chatter on ‘some’ barrels. Its hard to beat a lathe operated by someone who knows what they are doing

 

[MRP]

On a 3030 with a bad crown, spitting bullets out side ways. So as not to alter the looks I milled 1 inch in to barrel a couple of thousands over .310 or .311. Shot straight after that and no-one could tell un less giving it a close look.