correct stem for seating die

[Hrsmn51]

I have been working on a 130 AR Hybrid load in a 6.5x47 Lapua. I was experiencing some inconsistencies on paper.
I found the standard Forster seating die producing varying base to ojive measurements as much as 30 thou. This same die produces very consistent loads with the Lapua 123 Scenar.
Could some one direct me to the correct seating stem?
Berger states on their site the Hybrid is consistent at the ojive but not the tip
H

 

[Bc'z]

With the limited experience I have, I've noticed Lapua has tighter bbto tolerance than does Berger.
Are you sorting bbto?

 

[Hrsmn51]

Not sureBBTO??? But checked base to ojive and very consistent. Brass base to shoulder is consistent as well. The 123 Scenar works well with the standard Forster seating stem and the loaded rounds are well within spec. If I can't resolve the seating stem issue will sell the 130"s and buy L123. I have 100 123"s and 1800 130 OTM.
H

 

[cem]

The correct seating stem is one you personally lapped or glass bedded to fit your purposes. Hot melt glue or candle wax is often used as a quick and dirty way to fit the seating stem. In the current case taking a Dremel to create clearance for the tip might work as does uniforming the meplat.

A contact line, often seen as bright line, tends to be inferior to an area contact. This has shown up dramatically in collapsing handgun hollow points especially Sierra hollow cavity where the wall is not supported.

RCBS does offer some seating stems for specific Speer bullets - same ultimate ownership - that might or might not work for bullets from other makers just as Redding, and likely others, offers seating stems for VLD rifle bullets. Which ones, sadly, is left as an exercise for user.

 

[KenOath]

Do Forster do a VLD seating stem like Wilson do?

 

[Bc'z]

Not sureBBTO??? But checked base to ojive and very consistent. Brass base to shoulder is consistent as well. The 123 Scenar works well with the standard Forster seating stem and the loaded rounds are well within spec. If I can't resolve the seating stem issue will sell the 130"s and buy L123. I have 100 123"s and 1800 130 OTM.
H

Bullet base to ogive= bbto
It's the 1st step in
cartridge base to ogive =cbto

 

[Hrsmn51]

The stock stem worked great with VLD target 130's
The stem hits close to the tip, per Bergers info the AR Hybrid tips are not consistent, however base to ojive are. They offered no info on seating stems.

 

[Hrsmn51]

Will contact Forster or Whidden on Monday just was looking for first hand user experience.
H