HJ wrote, "Why the brass hulls ?"
Longevity.
"Your friend does know that in a SxS there's the possibility of a the load shifting in an un-crimped hull from the recoil of the other barrel."
My initial problems with OS cards dislodging in cold weather has been fixed by using 1 gauge oversized OS cards. I have used a variety of glues and settled on water Glass ONLY because I had to buy a quart of the stuff as it does not come in small quantities. Glue does not appear to be as important as I once thought because the oversized OS cards seems to contain the shot effectively and the glue is just added security. There has not been an OSC failure in a long time.
