Turning necks on Dasher brass

[Nowhere Man]

My Sinclair neck turning tool is hitting the case shoulder before I reach the bottom of the neck. I see they make a 30 & 40 degree cutter and I'm guessing I have the wrong one. Which one do I want?

 

[KMart]

I am assuming that you are turning cases that are fireformed to a Dasher 40* shoulder. In that case, use a 40* cutter.

 

[Nowhere Man]

Actually, it's Alpha dasher brass but thank you, 40 degree it will be.

Dave

 

[Gabe22BR]

There any reason for turning necks?

 

[Dave M.]

I am assuming that you are turning cases that are fireformed to a Dasher 40* shoulder. In that case, use a 40* cutter.

Actually, try using the larger 50 degree cutter. It is far easier to use a cutter with an angle greater than the shoulder angle you are cutting. This assures that you won’t put nicks in the shoulder if the brass angle isn’t perfect

 

[KMart]

Actually, try using the larger 50 degree cutter. It is far easier to use a cutter with an angle greater than the shoulder angle you are cutting. This assures that you won’t per nicks in the shoulder if the brass angle isn’t perfect

I use the K&M tools and their cutter for a 40* shoulder, is a 43* tool.

 

[Dusty Stevens]

Yes go more than 40deg. 21st century is nice to use if you have to get another tool

 

[Petros284]

Yes go more than 40deg. 21st century is nice to use if you have to get another tool

We as well grind our cutters past the specified angle. For instance 40 deg. Is actually 43.5 deg.

 

[Clancy]

There any reason for turning necks?

I’m going to bet it’s because somewhere along the line somebody decided that .003 was plenty of clearance for a no turn neck and tolerances just don’t stack up well enough between reamer, brass and bullet manufacturers to make that feasible. I’ve been turning everything for .004 plus clearance and it has really showed.

 

[joshb]

Actually, try using the larger 50 degree cutter. It is far easier to use a cutter with an angle greater than the shoulder angle you are cutting. This assures that you won’t put nicks in the shoulder if the brass angle isn’t perfect

Yes, but be very careful with the depth of your cut at the shoulder junction. You can cut the neck off. Ask me how I know.
Make sure your cases are all the same before you set up your cutting depth.