I have been working on making my own paracord slings. Cobra Knots. Single width and dual width.
Making them costs about the same or a little more than buying one off ebay, but I like doing it myself. Trying to get the length perfect is proving to be a little bit of work though. I made a longer one for my AR because I am not making them adjustable yet, and the lengths posted in videos on youtube are not correct for my liking. Either too short or too long
I was trying to make a formula, like measure the distance between sling swivels and add 10" (seemed to be good on my .410 gauge) but that theory didn't wok on my Maverick 88 with the swivel on the end of the takedown bolt on a 20" mag tube... It seems too long.
So I think the geometry of the position of the sling swivels as well as their distance from each other matter. Seems that about 8-10" longer than the sling swivels distance is close though//
Here are some pics of what I have been working on.
.410 with 18.5" barrel and a 40" sling (about 41.5" with swivels) - distance between the sling swivels is about 32" and this sling originally to me fealt about 1-2" too short, but now I think it is OK - This is the first one I made, and kind of where my 10" longer than sling swivel distance theory came from
The process:
and one I made with a single pass stitch and four chord core for my AR15- I think this one came out to about 44 or 45 inches when done, so I have enough room to leave the gun slung in front and still shoulder it without taking the sling off.