I have some CDI inlet into the bottom of a Choate tactical stock for a savage with aftermarket barrel in 300 win mag. Runs fine, no FTF. The main adjustment point is the mag release lever to get proper mag height. My gunsmith did a great job on the inlet, but mangled the release lever while adjusting... I am going to machine a new lever for a cleaner finished look, but it has not caused any functionality issues.