Hi guys , I'm looking for info and opinions on the Norc white box 7.62/51 ammo , I've read what I can find which is next to nothing but theres grumblings of it being bi-metal and hard on barels ? I've shot almost a case of Norc surplus form Canada ammo in the green wood ammo case and it's been fine for plinking in my m-305 . Is the white box corrosive or non corrosive ? Is it hard on barels ? It's time to re-supply and eagles got it on sale for 560$ / 1000 lot . Thanks much I appreciate your time in reading this , Ernst 
