I like the look of those 440gr boolits for the 500 Spawn. Very nice. Did you try them, or has anyone tried their boolits, with gas checks? If the mold is a gas check design. I run my 500 S&W pretty hot out of a Handi-rifle and would never get away with not using a GC. (without PC). What am I going to do with all those gas checks if this works out?