I have a friend who's a very good gun builder, much better than I am. He's run into some health issues and although he's presently doing well, he's lost the desire and mojo needed to continue building guns, at least for the time being. He had one mostly built for a customer and he's anxious to have it finished and as such, he's asked me to do what was left on it. It will go without some relief carving because I couldn't match what he's already done, so mostly it just needs a few small gunbuilding actions done and it needs to be finished. He had the stock and barrel tenons already drilled, but any pinning material that I have is too small for the hole. I tried some 3/32" brass rod, which is the thickest I have and it's slightly too small. He said he just used finishing nails, but does anyone have a guess what size would be slightly larger than 3/32". Alternately, I can obviously bore his holes out ever so slightly larger if I must, so is there another common pin or rod that I could use at this size?