I also have 500 mmp tan sabots. 45 cal that holds a .4 bullet. I can give you what ever you need to test. I also have the mmp sabots that are 45 cal but hold .357 bullets. Your welcome to try those as well.
Match Grade Machine, Inc.
Match Grade Machine 2410 West 350 North Bld 2 Hurricane, Utah84737U.S.A