6BR to 6 Dasher conversion...

[SKWERLZ]

I get more uniform results with forming a false shoulder with a 25 cal mandrel. I'm certainly no expert.

This is what I’d do as well

 

[HTSmith]

Have you measured a difference in Neck length for the 2 different ways? Jam method making a shorter neck? And if so..negligible ?...In learning mode here.
Thanks

I got more uniform overall case length using the false shoulder. Makes me feel better

 

[SHarvey]

If your new 6BR brass is Lapua, I will buy it from you and you can take the cash and get already formed Dasher. Just an idea.

I was just gonna suggest this.

 

[Fclassfool]

Send your Lapua 6BR brass to @DJSBRS and he will hydroform it turn your necks and whatever else you want done to it. It's perfect every time and turnaround is lightning fast!