The good thing about the 210's,you can find them fairly easy right now,unlike the 215's.
Curiously, the Fed primers are hit and miss....just the opposite here. I have been waiting for 215Ms for months. I have 5000, but like more on hand than that. I called the store and he had about 7000 210Ms, 15,000 210s but 45,000 215Ms. He just unpacked them about 2 hrs before my call.
So, I went over and put a huge dent in his inventory. I bought another 15,000 215Ms.