I shoot a standard no. 1 in .308 win. I was wondering if using a compound such as Bondo (automobile body filler) would work to build up the fore end at the hanger to free float the barrel. I've used Bondo for wood work many times building cabinetry when a repair had to be done, and it's worked very well, but I didn't know if the pressures and shock of firing a rifle cartridge would render it ineffective. Also, I'd like a set of open sights like are on the tropical models, and wanted to know if I ordered a quarter-rib with dovetail, rear sight, and the front sight assembly from the factory, would they fit a standard rifle? Also, has anyone used Remington CoreLokt cartridges? I've only had the rifle long enough to it needs some work, but could use some advice on what to do next? Thanks.