best expander die setup 270 to 300 WSM

[graywolf]

I'm rebarreling my 270 WSM to 300 WSM and have a lot of Norma brass leftover. I am looking at the Lee universal expander die to make some 300 WSM brass since it is so scarce. Any one have experience with the Lee expander or recommend another set up?

 

[Mikecr]

You're talking a pretty heavy taper to necks. But if you're just lookin to seat bullets for 30cal fire forming, it would work. Makes sure you anneal before doing this, or you could crack the neck-shoulder junctions.

 

[FEENIX]

I'm rebarreling my 270 WSM to 300 WSM and have a lot of Norma brass leftover. I am looking at the Lee universal expander die to make some 300 WSM brass since it is so scarce. Any one have experience with the Lee expander or recommend another set up?

Mine is from 21st Century (http://www.xxicsi.com/products-1.html).

 

[Rhovee]

Sinclair or 21st. Don't do it with one pass. Go to 7mm then 30. Then anneal

 

[graywolf]

Thanks for the suggestions. I've never up-sized case necks before.

 

[FEENIX]

Thanks for the suggestions. I've never up-sized case necks before.

It's a breeze and as @Rhovee noted, do it in two steps. Good luck!

 

[Rick Richard]

Mine is from 21st Century.