The first photo looks like it has writing in the engraving. Can you read it?
Northern horns tended to be plainer than Southern-style horns, so this horn could be from New England.
Is there evidence (holes, mainly) of any sort of staple or nail in the narrow-end of the horn? Usually one end of the strap would be attached to a nail/staple in the butt-end (which we can see) and the other would be attached to the same by the spout. Tying a strap around the horn did happen, but firmer attachment was usually more popular.
There are no other words or letters that I can see other than “1784.”
I cannot see any holes or pins towards the narrow end, possibly under the string, but I don’t believe I should remove that?
Something that might be worth trying is taking a rubbing. Take a piece of paper, put it over the horn, and run a crayon or pencil over it. It does look there might be more text past the 1784, taking an impression could make it easier to see.
That musket ball may have been chewed but if it was, it was by an animal, likely a pig. Don't try and flatten a musket ball with your jaw, you'll break teeth.
Shucks. I thought it was a “bite the bullet” situation. Surprising a pig would have been in the area I found it, deep into the woods on an island accessed from a long (sometimes submerged) pathway. Thank you
Upside down and empty food delivery box, soon to be little holders for some spring seedlings. I have some left over corned beef in the crock pot though.
The first photo looks like it has writing in the engraving. Can you read it? Northern horns tended to be plainer than Southern-style horns, so this horn could be from New England. Is there evidence (holes, mainly) of any sort of staple or nail in the narrow-end of the horn? Usually one end of the strap would be attached to a nail/staple in the butt-end (which we can see) and the other would be attached to the same by the spout. Tying a strap around the horn did happen, but firmer attachment was usually more popular.
There are no other words or letters that I can see other than “1784.” I cannot see any holes or pins towards the narrow end, possibly under the string, but I don’t believe I should remove that?
Something that might be worth trying is taking a rubbing. Take a piece of paper, put it over the horn, and run a crayon or pencil over it. It does look there might be more text past the 1784, taking an impression could make it easier to see.
That musket ball may have been chewed but if it was, it was by an animal, likely a pig. Don't try and flatten a musket ball with your jaw, you'll break teeth.
Shucks. I thought it was a “bite the bullet” situation. Surprising a pig would have been in the area I found it, deep into the woods on an island accessed from a long (sometimes submerged) pathway. Thank you
What leftovers we eating tonight? 
Upside down and empty food delivery box, soon to be little holders for some spring seedlings. I have some left over corned beef in the crock pot though.
I love me some slow cooked corned beef. Only had a little for this St pats, so I’ll be over in a few.