I was thinking about picking up an Norinco M14 and was wondering can it handle comercial 308 ammo you can get at walmart? I know the difference between 7.62 and 308 so I was just wondering if it is ok for the M14. Surplus ammo is a little hard to find around here. The amount of 308 ammo used would not be great maybe 30 or 40 rounds a week at the most during the summer months. Thanks