I posted this in reloading with no response, think I will try here

I have some new Bell, headstamped 470NE Rigby cases, that are 3.230" long. The "book" call out an OAL Case length of 3.250.

What are the length of your Cases?

I have some brand new Norma 470 cases and they also measure 3.230. The Barnes manual recomends trimming to 3.150. I just measured some original Kynock loaded rounds from the 1950s. They measure 3.230.

465H&H

465H&H, thanks for your post. Since my cases were some of the last made by Bell, I was wondering if they using up the last of their material.

Somewhere in the back of my head I think the Norma Cases are thicker? Thoughts? Could you weigh one?

Thanks,

I weighed three of the Norma cases. 323.8, 324.1, 324.4.

465H&H

I measured some of my unused Mast Technologies 470 NE brass headstamped BeLL with the small 'e'. They measured 3.238 3.236 3.241 3.242
3.238 3.243. These were random selections from 2 boxes. These were purchased several years ago. I never paid much attention as I ALWAYS trim and chamfer all my new cases before loading. Don't know any other way to start off even.

I don't believe I would trim my cases back as far as the Barnes manual suggests. Barnes has had miss prints before.
I would wait until they get over 3.25 and trim them back to 3.25.