Trigger and bedding might cost a bit. What won't cost anything and considering the factory parts effected,don't hurt a thing is.... lots of dry fire practice and work out your cleaning regime. Last R700 I got('17 ADL 223) has the best chamber cut I've ever stuck a cast bullet in. It's never seen a jacketed bullet. Shoots lights out @2700fps with a cheapchit Lee 55 out of the 12T factory brrl. Timney 510,bedding,and a 3-12 3200 Bushnell..... good luck with your project.