No, that's just Casabianca's conspiracy-mongering.
No, that's not how it works. The potential age range must include 1262 because the calibration is unambiguous for that end of the interval. Because the calibration is ambiguous for the other numbers, the upper limit of the interval gets a reasonably hard cutoff at 1384 CE. Then the correct way to interpret what you're wrongly considering to be an excluded subinterval is that according to the probability distribution underlying the Stuiver and Pearson method, the upper limit of the calendar date interval is not likely to fall within the date rage 1312-1352 CE to 95% confidence. The absolutely wrong way to interpret would be that the lower limit of the calibrated calendar interval can be 1352 CE.
Honestly, you either need to grapple with the complicated reality of what you're trying to argue or admit that it's over your head and concede. Every post from you brings a new attempt to shoehorn what is rather messy and difficult science into your pidgin understanding of it, and every day you're just as confident as you were the day before that one of the most highly scrutinized examples of radiocarbon dating is "clearly" wrong on that new basis.
You're really falling all over yourself trying to make this your new slam-dunk. Yesterday the multiple intercept was irrefutable evidence that Sample 1 had multiple ages of fibers—a non sequitur of truly flabbergasting magnitude. Today the multiple intercept is irrefutable evidence that the radiocarbon dating was incompatible with dating by historiographical methods. Neither of these has the slightest grounding in reality. Imagine what desperate new mud-against-the-wall claim we'll be treated to tomorrow.
First, I would have assumed that you understood I was excluding the 1353-1384 range rather than the 1262-1312 range.
If it is documented historically to have appeared in 1356, then yes the radiocarbon date is incompatible with dating by historiographical methods.
I'll thank you for referring me to
Summarizing a Set of Radiocarbon
Determinations: a Robust Approach
By J. ANDRtS CHRISTENt
University of Nottingham, UK
"The Shroud of Turin was first displayed in the 1350s AD (Damon et al., 1989);
the materials in the shroud should have died before that date and thus we state the
lower boundary of 600 BP for the distribution of 0."
and
"Of course we expect the shroud's manufacture and possibly its first exhibition to
have been soon after its organic materials died. Thus it seems likely that it was made
some time between 1300 and 1350 AD, just as concluded in Damon et al. (1989)"
Seems this paper agrees with excluding the 1352-1384 range.