Thrift and Training
More years ago than I care to think about, I took my Hunter Safety course and got my first license at age 14. My family had a camp in the Finger Lakes (west central NY), and my Dad and I went out for my first hunting trip. It was winter, and the snow was knee-deep. My Dad had bought himself an 870 and I had inherited the 1912 Marlin pump that had been his, and his Dad's.
My Father gave me one shell. I said, "But Dad, the gun holds 3. Why can't I have 3 shells?"
"Because, son, you should only need one."
"But what if I miss?"
"If you miss, then we'll talk about it. If there's a good reason, I'll give you another shell. If not, then you'll carry the gun empty for the rest of the afternoon."
"Why, Dad?"
"Because, Son, shells cost 25 cents apiece."
-That was not, of course, the real reason for my Father's doing what he did. He was teaching me to make every shot count.
I have taken many second shots since, mostly when bird hunting, and I have to admit that my success rate after a first shot miss is pretty darned low. I have also had opportunities (duck hunting, and a couple with grouse) where the second shot was pretty nice to have. But I think there is still a reason to start a new shooter with a single shot gun.