It depends on the cartridge and when it was made. It's a lowest bidder sort of situation. Winchester, Prvi and S&B are responsible for most of what I have seen but I have only bothered buying small amounts of certain things.
Nope, Herter's had a deal with NORMA.
To my knowledge, all of the Herter's headstamped brass was made by NORMA.
The only thing you will have to be careful with on those cases is the "flash hole" Some batches had large flash holes and some had small flash holes.
The worst that can happen is a bent decapping pin.
I have five different types of cartridge cases with the Herter's head stamp. I am old enough that Herter's was often the only mail order seller that actually had what was in their catalogue in stock, when you placed an order.
We didn't have lap tops or the internet back then, so the catalogue was the only reference.
My first order of 338 Win Mag cases had ''small'' flash holes. I just used a #drill to open them up to accept a normal ''large'' decapping pin.
To show you the quality of Herter's products, they sold single action revolvers, made by Saur, in Austria. They were much better SA revolvers than the Ruger Black Hawk and stronger as well, which was proven in blow up tests.
They called them "Virginian" or some such romantic name and they were smooth as glass when compared to Ruger, Colts, or the Italian knock offs. They were also cheaper than the Ruger and Colt offerings.
They didn't sell surplus stuff, like the Canadian Sidney I Robinson catalogue.
They had everything a DIY person needed as far as archery, firearms, reloading, stocks, barrels etc goes
I was very disappointed when they started their decline and eventual shut down.
The computer age killed that outlet.