Dr.Tim and Steve, good points about size of the spout. In this example, as I was just speculating, the horn started out as one that had a 'hollow' tip so I was limited to just how 'thin' I could make the area just below the thimble before I could determine what size the tip was going to be. Have to pre-plan your construction method you know.
Here's the thought process as I went along. I got the neck down to just a hair under 9/16 in diameter. Remember, this was a hollow tipped horn. Should I go further. Experience tells me based on the sound of filing that I was getting too close to 'emptiness'. With that established I was going to use some some leather strapping to attach the horn to the bag, but, and this is a but.......you have to leave enough room from diameter of the neck to the bottom of the tip, or rather thimble, so that when your cording is tied it won't slip off the horn. Could be embarrassing.
Anyway, knowing that thimbles are usually 'sized' based on ring size charts I decided to use a No. 12 thimble. Arghhhhh, none in my inventory. So I used a No. 11, which has an inside diameter of approximately 3/4 and still gives me 'enough room' that results in this present setup.
To both of you I could have used a much smaller thimble in order to make the horn more useful as a primer too. In this case I could do I've done on others and that is to cover the tip partially with a finger and shake a few grains in the pan and continue shooting. Or, I use my flat primer horn as show below. Either way good points raised and good discussion. Thanks.
Gary
