In my Low Wall Hornet, CCI 500s and Fed GM100Ms give equally good groups with H110 and 40gr VMaxes, but I've standardized on the Feds and use the 500s for handgun loads.
My first try with LiLGun and Rem 7 1/2s was a little disappointing, but I was using a different seater, so I'm not sure the load was the problem. I hope to find some of those 450s for my do-over, but primers are currently a bit scarce around here. Powder selection, OTOH, is the best it's been in years.
30gr Barnes VGs also do very well in my Browning with H110, even though I can't get them seated out nearly as far as the VMaxes, which like your loads are hanging way out there.
