Hello Guy's Don't know if this is the place for this question but don't know where else!! Today while shooting my knew RRA 223/5.56 Predator Pursuit, I was approached by another shooter who very urgently recommended that I not continue shooting the Hornady Steel Match ammo because the polymer coated cases would ruin the guns barrel. I know there was an issue with I believe molycoted bullets (don't know if I'm pronouncing that right) but I understand that a lot of the competition shooters are using this Hornady ammo today and I have not read anything negative about it. I don't know if there is any validity to this guy's argument and would appreciate any comments regarding this issue.