I have a military style rifle sling Id like to save.The previous owner really let it go over the years when wet and a little moldy. Its surface is very hard. The leather fibers are breaking at the holes to bend at 90 degree angle.Any advice on how to deal with its restoration is appreciated. I was going to get some Pecards and immerse it totally in a melted solution. See if that worked.Thanks guys.
I'd start with a liberal applicatioin of Black Rock leather treatment. I've brought back some sad looking holsters and saddles with that stuff, and use it for routine leather maintenance on everything, boots, shoes, belts, but seude. Great stuff, and a little goes a long ways. Give it a try first, may not need anything else.
When the fibers are broken there is nothing that will restore it. Using Pecards in very light applications will help restore some life to the leather. The old adage of "If a little will do a little good, a lot should do a lot of good" doesn't apply here. Use light coats of Pecards and let it soak into the leather. When the leather surface appears dry, apply another light coat and so on. I have revived Model 1907 military slings this way where they look presentable on a rifle, but I wouldn't trust them to hold the rifle's weight.
The old leather will soak up water like a sponge, and this is not good for the leather. You can use the Pecards on a soft rag to remove most of the crud.