Re: J-lock Rem 700 Question?
You can simply adjust the trigger with no side effects. You can switch bolt shrouds but the cocking piece will be to long, shorten or replace(shortening should be don by a smith). I woulld recommend replacing the j-lock on a precision rifle, I've seen them cause accuracy issues from erratic lock times and gun movement, from the firing pin hitting or rubbing on the cam for the j-lock. If you adjust the trigger and it shoots up to your expectations, your good to go.
Oh yea, I own Defensive Edge Gunsmithing & Tactical Training