SS Brass

Really? Making ammunition is a pretty specialized activity. The big companies that start out making both guns and ammo generally split up. It would be a pretty unusual for an established gun company to go the other way, and diversify into ammo.

Even if they did decide to load ammo, buying components from dedicated suppliers would probably be the way to go. Especially since, when I look at SIGs ammo offerings, it includes straight wall and bottle-necked cases, both in brass and nickel-plated variants.

Having said that, I have no direct knowledge of SIGs operations, so I can't say it's untrue.
 
I use SIG brass for my 6.5 Creedmoor. I have 300 pieces and the majority of it has been fired 3-4x. I sent it to someone to anneal it on a AMP and they said that the input number (137) was lower than the Hornady (140) brass I sent meaning the SIG brass was softer. But I haven’t lost a single piece yet and I actually have more accurate reloads using the SIG brass. Plus most of it was purchased for $39.99 for 50 so I am happy so far with the purchase.
 
I use SIG brass for my 6.5 Creedmoor. I have 300 pieces and the majority of it has been fired 3-4x. I sent it to someone to anneal it on a AMP and they said that the input number (137) was lower than the Hornady (140) brass I sent meaning the SIG brass was softer. But I haven’t lost a single piece yet and I actually have more accurate reloads using the SIG brass. Plus most of it was purchased for $39.99 for 50 so I am happy so far with the purchase.


The setting has nothing to do with how soft or hard the brass it, it's related to the volume of brass in the induction coil that it has to heat.
 
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