I had an interesting question asked of me today, what weight recoil spring should a guy start out with when adding a compensator to a 45 ACP 1911? I've never messed with comps before, and I'm not certain where to start. The guy who owns the gun appears to have a really, really lightweight recoil spring in it, and it keeps jamming on him. My first thought was to start at 16 lbs and work up or down from there to fine tune. The guy wants to use plain ol' 230 RN ball in it.