I was running SNS 147 grain out of both of my Xfives, and didn’t have any leading. I switched to “green” Bullets, because the owner gave me some to try, and they are more accurate in MY Xfives, than the SNS Bullets, and I don’t get any leading with them either.
That said, my PCCs, are a pair of Sig’s, and I will only run jhps or plated Bullets. Same goes for my “open” guns.