Outdoorlimited.com is where I just now found these. Never ordered from them before.
Magtech is good to go, for range use. It's Brazilian, parent company is CBC, they also own Sellier & Bellot (Czech) and MEN (German). I prefer S&B, but it's 'what and what' between the two.
Outdoorlimited is fine, if a bit pricey at times. I've bought from them before... one of the benefits to owning multiple surplus rifles and not reloading for them, is that you often have to search around to see who has what at the best prices
I've come to the conclusion regarding ammo and online stores; I think ammo sales are a LOT more regulated and watched, than say, T shirt sales. As the saying is nowadays, "F--- around and find out"; I don't think people want to risk getting the ATF after them for scams.
Use a credit card, I have one that I only use for amazon and another I only use for 'other online', and get it set up to notify you via email for charges. My Amex sends me "purchase, card not present" notifications.
If you ever run into trouble with a scam, the card companies are pretty strong about dealing with it.
I've ordered from about 20 different websites, and have never had an issue (beyond packaging, maybe). I would stick to storefront pages with credit card options displayed, and not buy from a gunbroker seller.
