Wilson seating dies - best approach to seating long?

[jcampbellsmith]

I'm just about to start to use my K&M seater with force measurement option.

https://www.kmshooting.com/catalog/arbor-press/arbor-press-with-force-measurement-option.html

I was planning to initially seat the bullets long with my std seater. Then to carefully do the final seating using the Arbor press. I have a target seating depth in mind for the load I'm working with.

How much longer should I seat the bullets on the first seating pass with my std seater? 20 thou? 50 thou? What would you recommend?

Thanks

JCS

 

[nosualc]

I was planning to initially seat the bullets long with my std seater. Then to carefully do the final seating using the Arbor press.

Maybe you're onto something new, but why 2 passes?

I think the right answer is just use your k&m. No need to use your std seater, at all. It'll be faster, and likely straighter.

-nosualc

 

[Down South]

Why not just use the K & M to begin with?

 

[3dogs]

just use the Wilson die with a brass washer between top and stem to seat long, reseat w/o washer to final seat depth
Jim

 

['Freak]

If you somehow manage to start the bullet going in a bit crooked using the regular seater die then the damage has already been done. I doubt if finishing the job using a different seater die, even if it is of superior design, it’ll be able to completely straighten out the mess already made in the first die.

 

[oldroper]

You loosen screw side Wilson bullet seater then you can adjust seating stem.

 

[mikecr]

I think he's wanting to remove the hump from his force measure. Maybe easier to lock into better readings.
3dogs provided the solution IMO. I wouldn't use a threaded seater anymore.

There will still be a hump in force reading when getting the bullet moving. But smaller than breaking case mouth with bullet bases.