TNHagies
What gun are you gonna use? If it is the one you are putting the .503's down - I am thinking that the 41 in CR will work... the other thing I am thinking about I'll bet those 41 will work in the White with a regualr MMP sabot.
I want to shoot them into some wet clay and see if they stay together even @ 22/2300 fps. - I am thinking they will...