If JerryF, JohnI and you want to believe the Carcano was a "POS tutti fruitti rifle that was falling apart", and that a scenario with one full miss and one wounding shot before the fatal strike indicates a "cracker jack sniper", fine with me. There's no known cure for Warren Commission Derangement Syndrome; sometimes a rare "miracle cure" comes from within.
Jerry, I don't know what your agenda is ...BUT... I will wager what ever amount of money that you can afford to lose that the tale about Lee Oswald using that old carcano to murder JFK, from that so called "sniper's Nest, is a huge pile of BS.
The only two witnesses ( Brennan and Rowland) who actually saw a man with a rifle behind the windows of the sixth floor said the rifle they saw was a HUNTING (aka high powered rifle) and one of those men said the hunting rifle had a large telescopic sight mounted.
And this is just fact #1 for starters.....