The JFK headshot explosion is at Bronson frame B12 UYB09 91985 (as can be seen below). And this frame is i reckon at Z314.15 (ie this Bronson frame is a bit later than the Zapruder Z313).
This here Z314.15 accords with Weissman's estimate that the Bronson footfall & the Zapruder footfall (of a lady wearing white shoes) synchronise at Z305.00 (as can be seen in the table below).
Researchers have somehow failed to see the obvious explosion in UYB09.
UYB09 is from Robyn Unger's gallery. It is his homemade scan of the Museum's 2017 youtube (the Museum have deleted the youtube)(today we can view a very inferior useless footage on their website).
But Weissman had full access to the Museum's superior 2019 scan (their 2019 number for frame B12 & frame UYB09 is 91985), & Weissman also had the film itself in his hands for direct scrutiny.
So, Weissman had no excuse for failing to see the explosion. And he failed to see a lot of things (why???).
B UYB Z Z Z Z 2019
01 01 296.2250 296.7250 297.2250 297.3750 91963
02 02A missing 297.7500 298.2500 298.7500 298.9000 91965
03 02 299.2750 299.7750 300.2750 300.4250 91967
04 03 300.8000 301.3000 301.8000 301.9500 91969
05 04 302.3250 302.8250 303.3250 303.4750 91971
06 05 303.8500 304.3500 304.8500
305.0000 91973
07 06A missing 305.3750 305.8750 306.3750 306.5250 91975
08 06 306.9000 307.4000 307.9000 308.0500 91977
09 07 308.4250 308.9250 309.4250 309.5750 91979
10 08A missing 309.9500 310.4500 310.9500 311.1000 91981
11 08 311.4750 311.9750 312.4750 312.6250 91983
12 09
headshot 313.0000 313.5000 314.0000
314.1500 91985
13 10 314.5250 315.0250 315.5250 315.6750 91987
14 11 316.0500 316.5500 317.0500 317.2000 91989
15 12A missing 317.5750 318.0750 318.5750 318.7250 91991
16 12 319.1000 319.6000 320.1000 320.2500 91993
17 13 320.6250 321.1250 321.6250 321.7750 91995
18 14 322.1500 322.6500 323.1500 323.3000 91997
19 15A missing 323.6750 324.1750 324.6750 324.8250 91999
20 15B missing 325.2000 325.7000 326.2000 326.3500 92001
21 15 326.7250 327.2250 327.7250 327.8750 92003
22 16 328.2500 328.7500 329.2500 329.4000 92005
23 17 329.7750 330.2750 330.7750 330.9250 92007
24 18 331.3000 331.8000 332.3000 332.4500 92009
25 19 332.8250 333.3250 333.8250 333.9750 92011
26 20 334.3500 334.8500 335.3500 335.5000 92013