I'm looking to install LP smartside over a wall assembly having 7/16" OSB plus 1" of rigid foam (foamular 250). I need to get through the 3/8" of siding, 1" of foam, and bury the nail at least 1 1/2" into the stud/OSB assembly. So, I will need a 3" nail. The nails must be round head hot-dipped galvanized. To avoid having to buy a new coil nailer that will take a 3" nailer, I'm looking at using our framing nailers with Paslode Roundrive paper-collated nails. Probably going to use a 3 1/4" x 0.131" nail... would like to get 3" x 0.120 nails but hard to find in the smooth shank, but ring-shank are easy to come by. Any thoughts or suggestions?