Thanks Curly, I feel quite lucky to have them.
I'm hoping to get to the range again today or tomorrow to try out 12 rounds in the 500/450 and see how that rifle groups with a proper sample size of rounds. I also plan to shoot the 450 Lancaster with a higher charge of 4198 based on a load from Wright's 4th edition. My current load of 45gr 4198 and a 300gr JHP are printing high and velocity is under historical speed for this round by 100-125fps. I'm hoping the higher charge brings that down without introducing crossing impacts.
Chris