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.
"Old carcano". The Carcano was about 23 years old and in dry storage for 18 of those years. It had the same bolt-action technology armies relied on all over the world. There was a post-WWII sea change towards the assault rifle, based on strategy not the bolt-action being obsolete overnight.
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.....
Both witnesses are problematic. What do you think a high-powered rifle would look like? Would it have a compressed-air pump attached to it? A small jet engine? Klein's Sporting Goods, who were in the business, advertised the Carcano as high-powered. And they were advertised as hunting rifles.
The rifle/scope size ratio of the Carcano from Klein's is comparable to others offered at the time.