I am currently working on a scout rifle and the only step I have left is to attach a front sight ramp. I'm not putting it on the end of the barrel but closer to the front of the scope rail (gunsmith had to put that on for me). I tried using a solder from the hardware store but after firing a few rounds the barrel heated up and the ramp fell off. The barrel is stainless and has a teflon-ish finish to it. Will I be able to solder the ramp to this or will I have to have a hole tapped? Do I just need a better solder? Last question - can I hurt the barrel's temper by sweating on the ramp?