The HSCA also conclude this:
The HSCA :
“The committee believed that the witnesses memories and
testimony on the number, direction, and timing of the shots may have
been substantially influenced by the intervening publicity concern
ing the events of November 22 1963" HSCA Final Report- pg 87
Acoustical Analysis Study:
"The buildings around the Plaza caused strong reverberations
or echoes that followed the initial sound by from 0.5 to 1.5 sec.
While these reflections caused no confusion to our listeners
who were prepared and expected to hear them they may well
inflated the number of shots reported by the suprised witnesses
during the assassination" HSCA Earwitness Analysis Report, pgs 135-137
We could play this game all day. For every one HSCA statement that you can cite for the lone-gunman position, I can cite two or three that support the conspiracy position, from Oswald's links to Ferrie and Shaw, to the moving of boxes in the sixth-floor window at a time when Oswald could not have been there, to the smell of gunpowder on the knoll, to Ruby's Mafia ties, to how Ruby entered the basement, to the DPD's pulling of security from the area where Ruby entered the basement shortly before he arrived, to the acoustical evidence of at least 4 shots, to the timing of the first hit on JFK, to the utter discrediting of the autopsy doctors, to the discovery of the fragment on the outer table of the skull to the left of the 6.5 mm fragment image, to Canning's rejection of the FPP's trajectory, etc., etc., etc.
You wrote this article but you don't believe it when numerous eyewitnesses state there was only two shots? https://miketgriffith.com/files/dent.htm
No, because the DPD dictabelt contains at least 4 gunshot impulses, because the Zapruder film shows reactions to at least 6 shots, because we've known for decades that the FBI and the DPD severely misrepresented what many witnesses told them, because some of the shots were fired almost simultaneously and could have sounded like one shot, and because some of the witnesses who were close to a firing point could only hear shots from that point (e.g., the guys beneath the sniper's nest), to name a few reasons.
The important part of this article is all about the fact that only two shells exhibit the chambering mark noted by Hoover and Josiah Thompson, and also CE 543 has three marks on the head of the case indicating it was dry fired. The fact that dryfiring the rifle with CE 543 in the chamber did not produce the chambering mark indicates the expansion of the chamber is required to produce the indentation or chambering mark. The reason the unfired round (CE141) exhibited the chambering mark is due to the chamber's expansion from the firing of CE 544, and CE 545. You can tell CE 545 was fired first because the indentation on CE 544 is more pronounced. The rifle could be examined tomorrow and determined if there is an anomaly in the chamber of the rifle producing the indentation. Given over 30 shells were noted by Thompson with the chambering mark it is a given the anomaly is still present. Anthony Marsh brought up a good point, If the anomaly in the chamber was due to the reamer then there could be other carcanos manufactured at the same time with the same defect.
You missed the evidence in my article. CE 543 could not have been used to fire a bullet during the assassination. How could the two other shells have a chambering impression on their
side but CE 543 not have one? How could even the live round that remained in the rifle’s chamber have this chambering mark on its
side but CE 543 not have it? Answer: CE 543 was not fired from the alleged murder weapon on the day of the shooting. If it had been fired that day, it would have an impression from the rifle's chamber on its side, but it does not. And only the last shell in the clip gets marked by the magazine follower, and we know CE 543 was not the last cartridge in the clip because the rifle was found with a live round in the chamber, so whenever CE 543 got marked by the magazine follower, it could not have been during the shooting.
Maybe the real question is what do you believe? It is hard to advocate a conspiracy with the knowledge there was only two shots.
Six or seven shots were fired.
https://miketgriffith.com/files/extrabullets.htmhttps://miketgriffith.com/files/6shots.htmImpulses from at least four of them are on the DPD dictabelt:
http://www.jfklancer.com/pdf/Thomas.pdfhttps://www.maryferrell.org/showDoc.html?docId=961#relPageId=7&tab=pagehttps://www.maryferrell.org/showDoc.html?docId=4277#relPageId=29Dr. G. Paul Chambers' 21-page analysis of the acoustical evidence in
Head Shot: The Science Behind the JFK Assassination (chapter 6) (Dr. Chambers also responds to the NRC arguments against the acoustical evidence.)
There was a bullet hole in the windshield--several witnesses got a very good look at it:
http://www.jfksouthknollgunman.com/index.php/04-2-bullet-hole/ 
