depends on actual rifle, some particular need. Remington 700s had some issues with trigger, partial recall. Many old Military Mauser sporters change trigger to single smooth pull replacing the 2 stage, long creep military trigger. Factory triggers are compromise on release at times, trigger pull may be varying from 5 pounds to 8 pounds depending on weather, some trigers not in best position for trigger finger if small hands or very large hands.Do you want to do target shooting? maybe 3 pounds pull is what you want. If rifle is selfloader and sensitive ammo, then 6 pounds may be better weight of pull to prevent slam fire. Some H&K self loader had 12 pound pulls- police issue, general use that had what was double action revolver weight of trigger pull- then change it to something longer pull and lighter down to 4.5 pounds that was near spec for 1911 target use. in military match. less need.to change trigger in medium to higher priced newer sporting rifles especially bolt actions. A AR15 clone might have stiff military trigger and sporting trigger change may be helpful in hunting.