ive been working on a Win 70 SS first time I got to inspect one up close & without stock on & it looks to be well built -steel mag tapered into receiver -steel trigger gaurd- Huge recoil lug & flat area on reciever just behind it, does any one know the barrel twist rate of 300 WM m70's or where to find them? any one using a model 70 thoughts & or comments appreciated, other than trigger system,which seems to work fine - looks like one of most durable rifle Ive seen