I deprime, then sort by cleaning the primer pockets on my RCBS rotary thingamajig workstation. I use a large primer cleaning tool. If it don't fit... guess what... Its a small primer. Federal, Speer, Blazer and a couple of others started using them a few years back.
Unlike others, I throw the SP cartridges into a bucket... and when I have enough... I reload them too! Brass is brass is brass....
Remember, the ammo manufacturers aren't in business to make it easy for us reloaders. They would rather we always have to purchase THEIR new ammo.
And so.... it goes.....
Da