Question about Norma 6.5-284 brass

[CamoWhamo]

I've been mucking about with a wildcat idea which is essentially a shortened .284W. If it works the final iteration will be a shortened .284 Shehane.

Phase one was to trim down a F/L .284W die and form some cases, pushing the shoulder back 0.225"

I had a bunch of well used .284W brass in a mix of brands given to me for testing.

Hornady, Lapua and Winchester brass all had problems with creases appearing in the new shoulder (what was previously the sidewall).

However the 2 pieces of Norma brass that I had both formed perfectly.

Is Norma brass somehow different (thinner, softer?) than the other brands or was it just dumb luck and pure co-incidence that it worked where the other brands failed?

 

[Walt Krafft]

You will need to anneal any used brass before reforming. May need to anneal new brass too.

 

[CamoWhamo]

Yes, I should have mentioned that I did anneal some brass as part of the testing. It helped a bit but there was still some significant creasing occuring.
And, to clarify, the creases are not from over lubing the case. They are deep folds.

 

[Ringostar]

You might be better off getting a case forming/wildcat die. Contact @Uthink Uknow on here. They offer one for the 284 case.