My personal preference has evolved from 4 decades of 'Target' shooting (and plenty of hunting).
I WILL NOT use a 'Hair Trigger' on anything.
I went that route when I was younger on advice from the 'Professionals'.
Spent a fortune in trigger jobs that ruined parts and made my firearms unsafe to load!
I prefer 3 or 4 pounds on most triggers, including everything but 'Carry Hunting' rifles.
3 or 4 pounds is enough for safety (Bare minimum though!) and it's not a hindrance at all when you are target shooting or varmint shooting.
When you are carrying a rifle, like a on a walking hunt, I prefer 5 or 6 pounds for the added 'Safety' factor.
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I don't care for 'Trigger Take-up' or 'Creep'.
I want the trigger to BREAK like a glass rod when I reach 'TRIGGER' pressure.
I DON'T WANT TAKE UP, I DON'T WANT THE TRIGGER TO 'CREEP'...
I want the trigger to break like a glass rod when I reach the 3 or 4 pounds required to discharge the rifle.
If the sears aren't SQUARE with each other, they will grind on each other before discharging, and I HATE that!
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I do not use over-travel limiters, and removing over travel limiters actually, physically, noticeably increased my shooting scores in one day!
I was listening to the 'Professionals' again,
And I had my triggers set up with over travel limiters that barely allowed the trigger to break, just like all the experts and gun writers of the day recommended...
What I found out was,
When you pull the trigger, the trigger breaks, then you hit the limiter,
And the closer the limiter is to the break, the sooner you hit it...
Well, I believe I was hitting the limiter and moving the rifle before the round discharged (or moving while the rifle was discharging)...
By letting the trigger travel after the trigger breaks,
the finger/trigger is still swinging free and not effecting the rifle before/while it's discharging.
My group averages went up that day on that rifle,
So I took the EXPENSIVE limiter off another rifle, and tried it the next day...
Group averages went up on that one also,
So I tried another... Same results.
Subtle changes, but changes for the better none the less!
So now I back the over travel limiter completely off or remove it entirely and I've seen no ill effects in my shooting on the range, in competition or hunting from it!
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Now, Over travel limiters have their place in semi-automatic Handgun rapid fire matches,
But on center fire rifles, revolvers or semi automatic slow fire I don't have one bit of use for them...
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I DO have a VERY LIGHT trigger on my bench rifles.
Super sensitive rifles usually require a very light trigger, but those rifles will NEVER get more than one round at a time,
and they will NEVER be loaded unless they are pointed down range and ready to fire...
I can't find a reason for a 'Hair Trigger' on anything else, not even handguns in competition, but I'm not (and never was) a big handgun guy...
Didn't even have a permit until the three gun matches came along, and I don't usually carry in my daily life...
Someone with more handgun experience than me will have t make the case for super light triggers on handguns.