Don't know, but once you start loading with Remington primers it will ruin you from wanting to use anything else. I wouldn't advise since they are expensive and hard to find sometimes. LOL But dam they were sweet on my double reloads. I say were because for the last half dozen years all I shoot are new Gun Clubs or Wally World 4 packs, except for 40 yard plus game loads.
Remington primers were my favorite when I shot cowboy fast draw with wax bullets but started buying Rios because of the price.
Surprised to see they're still around, as we were told several years ago Remington was getting out the reloading Component Business. I had loaded both of them, but switched to Federal and eventually Fiocchi when they became so expensive. Miss my reloads some days, but the convenience of the Cheap Shells offsets any advantage in my mind.
My retailer told me (last week) he could no longer get Remington reloading components. He thought Remington was getting out of the reloading component business.
No difference between the two. They are the best, like everything else they make. But very expensive.
Speeking of Remington primers. I saw that Bass Pro is now offering a 100 count bubble wraped package for 9.99 Hurry while supplies last !
I used Fiocchi 616's in everything. I can't even guess how many sleeves I've used and never had a FTF. Why bust yer ass and pop the big$ looking for something that makes no difference? JMO of course, but ..............
Back in the early 60's when reloading was in it's infancy we pretty much reloaded any primers that were available. I still have all my fingers and both eyes.