I'm using a framing nail gun to re-build some stairs. This is my first time using a nail gun so I'm inexperienced. There are some small pieces of wood that are used in a corner to support the last stairs that are nailed together. There are two vertical pieces (2 and a quarter inches tall) and a horizontal piece on top (about a foot long). The pieces are standard 2x4s. I have to rebuild this piece because the original got beat up and I'm reusing an old stud. My problem is that I use a nail gun, it destroys the wood (splitting).
The air pressure is around 100 psi.
Is there something I can do to help remedy this? Any tips are appreciated,