I have 6 each of 56.0-57.0 in .2 grain increments to run some ladders on the 27th, started working with Retumbo last year with 140AB. Got my hands on 500 142 ABLR, switching over to them. Contacted Nosler for data, was told could use the 140 data that I had already been working on. Interestingly, was told to seat them off of the lands, Nosler says they start them at .050 off and adjust them from there. I'll stay up on this thread, post with my results.