thinking of useing cast 160 -180 grn 357`s and size down to 352 with a home made 351 die in lyman luber sizer for use in 351 win 1907 SL. anyone ever do this out there. will bore /ream out a old 30 or 32 cal sizer to 352 dia. i dont know if i need to gas check these..may be over the top for cast and run on up to pressure/velocity needed to cycle the action? any info is a help. thanks, Phil