That is a Prewar M 70 Winchester made about 1939 in .257 Robts cal.Standard grade with Super grade swivels. It has a Redfield Peep sight on it. I was using Factory WW 117 gr. ammo. I shot it from 110 yds offhand as I didnt have a rest available.Amazingly the hog had smelled the corn that I had put out for deer several hundred yards DOWNwind.