Which Redding bushing do I need?

[Yagingaboy]

Ok my rifle is going in in a couple weeks to be rebarrelled to 7/300wsm. This is my first experience with a wildcat and forming brass to this extent. I'm currious as to which bushing I need to buy for a Redding die to reform my brass to .284 from .308? Any advice?

 

[Yagingaboy]

I'm assuming after doing some research that with a neck diameter of .321 of a loaded 7mm WSM I will need a .319 or .318 diameter bushing? I would think that the .321 neck diameter of the 7 wsm should be the same for a 7/300 wsm. Is that true?

 

[Preacher]

A .319 and a .320 sound better to me.. .003 seems plenty tight..
It's also hard to reform brass with a bushing die.. best to use a full length die to neck down cases..

 

[HillbillySniper]

+1 Preacher


Hillbilly

 

[schumi]

Preacher is right. That's the way I neck down .284 Winchester brass to 6.5mm.

 

[pmarauder]

.321 loaded round? You must have some thick brass. Is the WSM brass alot thicker like the WSSM brass is? My loaded round measurement on the 7mm STW is .314 no turn neck.