Yes it is. The fact remains that Weitzman originally described details (which is inconsistent with his later retraction which claimed he just saw it “at a glance”. Furthermore, he described details (like the clip) that are inconsistent with the Carcano rifle in evidence. Your excuse for how that happened is pure speculation.
Either you didn't understand, or just don't care to. What I've said about Weitzman, Boone, and Craig is not speculation: Weitzman is on the record saying that was wrong. Boone is also on the record that he simply repeated what he heard someone else say. Craig's record is a bit different: he told mutually-contradictory stories that only damaged his credibility.
The fact remains that Weitzman originally described details NO, he did NOT..... Weitzman was called back to examine a rifle later that afternoon for Detective CW Brown, and FBI agent A1bert Sawyers. and THAT's the rifle he described for Sawyers. ORIGINALLY ( at the time Day picked the rifle up from the floor ) he simply said that the rifle looked like a 7.65 mauser. He never DESCRIBED any details at that time.
Here's what Weitzman told the WC lawyer....
Mr. WEITZMAN - After that, I returned to my office and
I was called down to the city that afternoon later to make a statement on what I had seen.