Remember their website states to keep them under 1200fps. These are plated not jacketed rounds.
Sadly, Midway's site continues to say 1500fps, which is what I followed. Having always had good results with Rainiers in the past and armed with a 22# recoil spring for my G20 I loaded a pile.
Add: I would have to look back at my log book but I think I was pushing them well over 1300fps. Thinking back to my troubleshooting at the time I was suspicious that the Lee FCD was deforming the projo, which may have contributed. Unforturnately I had loaded the box of 500 and had none left to test my theory. I agree that the price for Rainiers has gone through the roof, used to be way cheaper than FMJs. Was thinking of trying Precision Delta next time.