Threads on Forster BR Dies

[bsekf]

What is the TPI for the Forester BR seating stem? Or, how much does a full turn change the seating depth?

Bill

 

[bsekf]

I am asking about the one without the micro adjuster.

Bill

 

[oht]

Depends on the size. 6mm and smaller I believe is 10-32. All larger is 1/4-28.

https://www.forsterproducts.com/pdf/instructions/br_seater_die_instructions.pdf

https://www.forsterproducts.com/pdf/catalog/RP-003-01_Standard-Bench-Rest-Seaters.pdf

 

[Jody Simcox]

This the info you’re looking for?

 

[bsekf]

Thank you very much.

Bill

 

[KMart]

From the instructions posted by oht

10-40 thread 243 and smaller

¼-40 thread 257 and larger

 

[KMart]

On the seating stem?
Good question as mine is micro seater.

The Micrometer Seater and the BR seater uses the same seating stems, in a given cartridge.

 

[marchboom]

Just checked my Forster .223 ultra seater stem with a thread pitch gauge and it reads 10-40.