padom - Your results with the Krieger validate my confidence in the ones I've got on V-22s & a CMP 40XB that jelrod did the V-22 mag repeater conversion on. I chambered all three of mine with a EPS reamer from PTG, and all three really like a lot of SK Rifle Match I found at Grafs three years ago. I had to do some explaining to the sales gal who I bought some lot samples from, but when she understood what I was after & why, she was good help, and at the time (June 2017), they were running a dealer special featuring free freight & insurance. So when I found a lot # that shot really well in my two 40Xs, and ordered a case of it, my dealer price was $638 delivered. She even called me back a couple of days later, asking if I wanted another case of the same lot - she'd taken it upon herself to go snooping through the warehouse, and had found one more unbroken case of it. Bless her heart - you bet I snapped it up at the same price! However, the next few times I called to ask for lot samples, I got some dude who really didn't have a clue, and what's worse - didn't care.
Whatever, thanks for posting the results with your Krieger...hope you have time to do some Center-X lot testing with it down the road....