It was quite a few years later than 1963 (1985 to 1987 to be exact) - but I remember pedaling my bike to the local hardware store to buy a few shotgun shells for the old 20 guage, even in a time when my buying them was technically illegal. The owner knew my dad though, and usually I was buying just 4 or 5 shells of #6 birdshot at a time with a check my dad had written for just a dollar or two.
Sure, I could have used those shells to murder a couple people, but I didn't. In retrospect, that time alone in the woods, killing nothing but a rabbit or a couple of squirrels or more likely, a tin can or an old tire or washing machine was time I could have spent in a lot more negative activities like getting into the same sort of trouble that kids of my own generation and today's can get into.
Thank God the boundaries built by my parents were tight enough to keep me alive and out of prison and the evils that ran through my teenage mind were of the petty, garden variety that all teenagers experience rather than the minds of teenagers who don't have good supervision and moral guidance.
Guns can be used for moral, immoral and ammoral (ammoral probably best describes my own teenage experience, although this tended toward the moral in that it kept me away from the immoral in the time in which I was using them) purposes.