The questions weren't boring the first time they were brought up. I've declined to laboriously type out detailed answers a second or third time. Once should be sufficient, because all posts at this website are retained on it permanently, not deleted after a few days or weeks (as at some other websites).
You've said publicly that you have trouble seeing photos (and text) unless they are extra-enlarged. For a similar old-age-related reason, typing a "detailed" answer is quite laborious for me to do. Therefore, I will ignore questions which I've already answered. Also, questions which are essentially a re-wording or re-hash of the previously answered question.
Reply to your newest post's questions/statements directed to me:
> 1. So these dovetail sabots were not made especially for Blakely cannons.
Some calibers (2.5" and 3.6"-caliber) of the Type 2 CS Blakely Plate-Sabot (which has the "dovetailed" angular post) were made for use in Blakely rifles. Others, such as the 2.9" and 3.67"-caliber sabots, were not.
> 2. The word 'Blakely" really had no meaning and were cast at the Selma Arsenal.
No, on two counts. Please go re-read what I wrote. I said SOME of the sabots are "suspected" (by me and others) to have been made at the Selma Arsenal complex. Second point: I've been saying, repeatedly, that the marking on these sabot's flat top DOES have meaning. How on earth do you interpret my posts as saying "The word Blakely really had no meaning."
That is an example why I have been decline to answer you.
Sidenote:
Some of the 3.67"-caliber Type 2 CS Blakely Plate-Sabots are marked with an incorrect spelling of Blakely's name, as "Blakeley" (see photo in a previous discussion, linked by CWArtillery). Some are spelled correctly,"Blakely" (see photo on page 521 of Jack Bell's book). Some have no marking.
> 3. The word 'Blakely" could not be read by the gunner as a guide to match shell with any cannon. (can't be seen externally).
Yes.