Oswald was in the Marines, I damn well bet he culd shoot straight.
Oswald almost had to repeat the rifle course and the entire boot camp because his shooting was sooooooo bad.
On Nov 22 Oswald used an $18.00 rifle, made for the Italian army in 1945. The Warren Commission found he made the shots with the help of the magic bullet which caused SEVEN different wounds in JFK and Connally. Half of the ammo Oswald used, when tested, misfired, it was eighteen years old.
There's much, much, more: read ULTIMATE SACRIFICE by Aldman and Hartman. This book is new, latest assassination stuff in it, they say the mafia was heavily involved.
I still think it was LBJ and Hoover with the help of some professional hitmen.
If you've ever been to Dealy Plaza you know what I mean. The distance is so short that he could have done it one-handed and still had a 50/50 shot at hitting his target.....
A bizarre story was that Oswald (or his double) went to a public shooting range between Dallas and Ft. Worth to sight in a rifle, and fired on an adjoining shooter's target, then got into some kind of hot argument over it. The idea here was supposedly to call attention to himself - - or to a guy that looked like him.