I've shot 10's of thousands (over 100,000) NSI 209-688 primers. Never had a pierced primer as mentioned. I've been 100% happy with them.
Thanks for the good report. That's a lot of shooting!
Opinions vary on these, but so far I've been pleased.
The 1,000 count trays are a bit of a nuisance, all I can figure is that these are packaged for commercial loading machines. Following a u-toob video I made a block with a refrigerator magnet on it and solved that problem. Now, I just wish I'd saved a few more empty primer trays.
