Ok i have triangulated thejfklimo at Z133, & it is almost exactly as per my original blue rectangle.
I used frame Z133, plus some of the earlier frames, to triangulate.
The front left corner of thejfklimo was in frame Z133 on an alignment 2.9 ft outside the kerbline of the southwest corner, & 1.5 ft west of the end of the painted stripe.
The blue rectangle might possibly need to be moved back say 1 ft east, or say 2 or 3 or 4 ft east if we agree that my blue rectangle is drawn too far away (north) of the painted stripe, but i find it difficult to agree with 10 ft east (thejfklimo would have to be hard up to the stripe).
Actually, moving thejfklimo back 10 ft at Z133 helps my theory.
Actually, early this year, i had adopted it back 10 ft at Z133, but later i adopted the blue rectangle.
By adopting it back 10 ft it places Oswald's shot-1 at say Z121 instead of my current Z111 (these are true trigger timings, not the sound of the bang)(the sound of the bang would be Z113).
And, Roselle & Scearce have nominated shot-1 as being at Z124 plus or minus (i think) 3 frames (true trigger timing)(not the sound of the bang).
So, my Z121 is at their acceptable limit.
So, no-one would be happier than me to find out that thejfklimo (at Z133) was 10 ft east of the blue rectangle.
But Roselle & Scearce were talking about voluntary reaction times, not startle reaction times, & voluntary reactions can vary by miles, so, i still favor that Oswald squeezed the trigger at close to Z111 rather than Z121.
But, pozzy wize, we now know where thejfklimo was to almost the inch -- it was when jfk's back was in line with the overhead signal arm.
And re the left/right pozzy of thejfklimo, in the center lane, (we now know that) it was when jfk's back was a few inches north of the collar holding the 2 guy rods.
The slug hit the outside of the western guy rod, say a little less than 1 foot from the collar.
Small bits of lead show up in xrays on the back of jfk's head.
CE567 & CE569 are the 2 halves of the copper jacket (all copper jackets are made in 2 halves), that were found in the limo.
The remnant slug made a hole in the floor, tween Nellie & John, found when the limo was re-built in Dec 1963 (FBI letter).
And silly experts on this forum still argue whether the first shot was at Z160 or Z180 or somesuch.
And then Oswald's shot-2 was at about Z216, the magic bullet, which landed at about Z218 -- about 105 frames after shot-1 (5.7 sec).
And experts on this forum argue that it was at Z222 or Z224 or somesuch (however the exact timing here, ie landing at Z218 or Z224, is of almost zero importance).
The timing does have a minor interest re Connally's lapel flip at Z224.
And (we know that) Oswald had already stood up & back from the window when he saw Hickey kill jfk at Z313.
Surprizingly, (we know that) Oswald had already decided not to fire his last bullet before he had seen Hickey kill jfk.
How could Oswald be sure that his shot-2 was good???.
JFK didnt throw his arms up in the air & crash throo the rails & drop down onto a bar below.
JFK didnt stand up & grab hold of himself & topple backwards onto the tarmac.
Anyhow, as it happened, (we know that) standing up & back gave Oswald a second or two start for getting down to his meeting with Baker at the lunchroom.
Which took about 48 sec (to get to the 2nd floor)(but he didnt meet Baker untill say 80 sec).
Anyhow, Bell stopped filming when thejfklimo was 9 ft shy of where it was when Oswald squeezed the trigger.
And when thelimo had gone say another 1 ft (which brings it to 10 ft) the slug hit the signal arm.
Which equates to say 10 Zapruder frames, after Bell stopped filming.
And Betzner Altgens Willis Croft & Zapruder & Co didnt hear.