Johnn,
The Re cases are those offered as reloading components; I'll try posting a pic of their box later tonight.
on another subject, the twist rate chart you displayed (and re-posted by others), I can see at least two errors;
Husqvarna did not factory chambered the .308 Norma Magnum - while they "might" have done it on (very) special order.
The 1651 (.358 Norma Magnum) have a twist rate of 1:10
Hey guy,

glad to see your input. The Re on the headstamp, designating it as a reloading component makes sence.
With my 308NM brass, much of it I collected from loaded ammo I had purchased plus the odd quantity I've picked up at gun shows. It's quite possible the 'stuff' acquired at gun shows started out as a reloadable component.
I have a few boxes of new unprimed Norma 30-06 brass, none of which has a Re as part of the headstamp so this is one instance where it becomes a little confusing

..
Similarily, I've recently purchased a 'quantity' on new Norma unprimed 358NM brass from Budget Shooter Supply, no Re as part of the head stamp. The confusion grows.
Last but not least, I've also purchased some new unprimed 7x61 S&H brass, and this doesn't have a Re stamp either. However, this isn't the earlier production 7x61 S&H but the newer 'improved' later production run designated 7x61 S&H Super.

Again, no Re stamp.
On the topic of the twist rate info, where I got what I've posted is from an earlier edition of the Sierra reloading manual. There on Pg. 691 it states;
- 308 Norma Magnum - 1 in 10" Musketeer; Schultz & Larsen
- 308 Norma Magnum - 1 in 12" Browning; Husqvarna
I personally don't know but that's what info I was going with as to who produced or chambered for 308NM.
In the same manual, Pg. 692, the following is stated;
- 358 Norma Magnum - 1 in 12" Husqvarna; Schultz & Larsen.

The more I hear

, the more confused I get

.