7 saum brass

[Arapaho]

Please keep in mind that different brass manufacturers have a different neck thickness. If you do not have the proper gauges to measure the thickness, there is a way you can do it with calipers. I will get back to you when I can.

 

[EE_Reloader]

I ended up buying ADG 6.5 SAUM brass and sizing up to 7 SAUM since it's impossible to find. The brass I bought was once shot. I annealed the brass and then sized it using two separate mandrels. First one was to .277 and the final took me to .282. It worked pretty well and I didn't loose a single piece. I haven't loaded any of them because I've been busy on a 300 WSM project but at some point I'm gonna get to it.

 

[Arapaho]

I ended up buying ADG 6.5 SAUM brass and sizing up to 7 SAUM since it's impossible to find. The brass I bought was once shot. I annealed the brass and then sized it using two separate mandrels. First one was to .277 and the final took me to .282. It worked pretty well and I didn't loose a single piece. I haven't loaded any of them because I've been busy on a 300 WSM project but at some point I'm gonna get to it.

Generally speaking, necking up keeps you from thickening the neck walls but stretching it instead, so you usually don't have to turn necks unless it's for consistency alone. Unfortunately in some cartridges, this causes a doughnut to form inside the case at the neck/shoulder junction after a few firings. The doughnut can be cut out with the K&N neck turner that I use just as easy though. Either way works and is better than not having brass to shoot.

 

[Ratherbhuntn]

I'm trying to find some also. I may have to try and use the 300 as I have a few of those.