A couple of years ago a friend was shooting his new Winchester model 70 rifle in 7mm WSM caliber when the rifle exploded. He was shooting Winchester factory ammo. Winchester replaced the rifle but my friend told me that he agreed not to talk about it. Therefore I do not know if they told him why the rifle failed, i.e. rifle or ammo. A couple of weeks later another person we know had an identical rifle explode, I was told. The rifles were bought the same day at the same store. I do not know the ammo used this time, but I was told that Winchester did not replace this rifle. I am in the market for a new rifle, but after seeing the parts and pieces of the first blown up rifle (I was about 20 feet away when it happened) I am not comfortable buying a Winchester. Has anyone heard anything about similar problems?