Speedy,
Damn dude. I know the feeling though. I had a GSG-5 and had the same thing (fte) but luckily the owner of my LGSis my good friend so he sent that one in and just gave me another to replace it.
If you have any problems with the sling just give me a holler and I'll help in any way I can.
Ross,
Its okay, I did ask. Plus its a free bump for me. Lol
Rico,
I understand what you mean. I've actually gotten blood on a customers sling from doing it so long. My hands were numb and already had blisters. I didn't notice it till I was almost done too, pissd me off. Lol.
I have not done the open 6 strings but pretty sure I could try or figure it out. The cord I use takes 550lbs of pressure to break a 1ft section. I wrap the innerards 4 times around the sling swivels and then use about 50ft of paracord for the wrapping of a single wrap sling. Around 100ft for a double.
I am more than sure your sling won't break. If it does under normal circumstances I will make you a new one on my dime! I have made plenty of slings (probably over 300) for friends and their families and have never had one come back yet. Even have a guy using one on his .50 cal BMG
And I would NEVER charge anybody that much for a sling. The swivels themselves cost around 10 bucks.