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Old 08-27-2019, 04:57 PM
crappiecop
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40X .22LR (722) std. barrel trigger weight adjustment



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I have a new to me 40X .22LR standard barrel on a 722 action. I would like to increase the trigger weight from it's current weight.

How hard should the trigger weight adjustment screw located on the bottom in front of the trigger be to turn? Looking at the diagram in the Service Manual there does not appear to be a set screw.

I'd like to increase the trigger weight and the Service Manual says to turn it clockwise. I've tried turning the screw with a bit inserted and using my fingers in an attempt to turn the screw unsuccessfully. I'd like to try to not have to take the trigger guard off to get a full length screw driver on the screw.

Any tricks?
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Old 08-27-2019, 08:04 PM
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Will it move in the counter-clockwise direction ? If so, it may just be bottomed out. If not, it just stuck. Remove the action from the stock, lube the trigger with lighter fluid, then try the adjustment screws. Let it dry, reassemble.
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Old 08-27-2019, 08:11 PM
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Quote:
Originally Posted by 52DH&R12 View Post
Will it move in the counter-clockwise direction ? If so, it may just be bottomed out. If not, it just stuck. Remove the action from the stock, lube the trigger with lighter fluid, then try the adjustment screws. Let it dry, reassemble.
It might take a soak if that 60 year old trigger has been badly lubricated in the past and that lubricant has deteriorated.
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Old 08-27-2019, 08:53 PM
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On some of the CMP rifles, the adjustments were staked, presumably to keep the youngsters from fiddling with the adjustments. Take it out of the stock and see if either side of the trigger housing above the pull adjustment screw has been staked with a center punch. Also, some shooters use a type of Loctite that makes the screw difficult to move, to keep vibration from turning the screws. It could also be missing the steel ball at the end of the pull adjustment screw that forces the spring tighter.
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Old 08-27-2019, 10:09 PM
crappiecop
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Thank you for everyone that replied.

I took the action out and discovered that the steel adjustment ball is missing (thanks SBS). The trigger adjustment screw was bottomed out clockwise (thanks 52DH&R12). I have a new and used trigger adjustment steel ball ordered.

I believe the trigger spring is still present. If it ends up that it is missing, is there a source for a trigger spring for a 722 type 40X trigger?

The rest of the trigger assembly appears to be intact with some sealant over the trigger engagement screw in the rear and the trigger stop screw on the front side is present. I did not observe any staking or punch marks on the trigger housing. The trigger assembly appears to be fairly clean without any old dried up lubricants (edelmann). I will lube it with lighter fluid when I install the trigger adjustment ball and let it dry.

The trigger weighed between 12-16 oz without the steel ball. I am curious if removing the steel ball was the the poor man's 12-16 oz trigger job?
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Old 08-28-2019, 06:15 AM
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Most likely lost when adjustment screw was backed out too far -- happens a lot.
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Old 09-03-2019, 07:21 PM
crappiecop
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Update to my 40X (722 std. barrel) trigger. I installed the missing trigger adjustment ball and it has allowed me to adjust the trigger weight. Thanks to everyone who provided input.
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Old 09-03-2019, 07:47 PM
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This thread is a perfect example of why RFC is such a great place. Thanks to all of the responders.
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Old 09-03-2019, 08:33 PM
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This thread is a perfect example of why RFC is such a great place. Thanks to all of the responders.
Absolutely... I was watching this thread in case I need this info for my 40X triggers...
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Old 09-05-2019, 10:16 AM
crappiecop
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Here are a couple of photos of my 4 digit 40X standard barrel. It is a U.S. Property marked receiver that has a gap between the U.S. and Property where the M.C. would be stamped on a U.S.M.C. marked receiver. Looks like Remington just ground off the M.C. on the roll stamp when finished with the Marine rifle contract.


Last edited by crappiecop; 09-05-2019 at 12:59 PM.
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Old 09-05-2019, 01:49 PM
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Scope?

What scope in the 2nd pic? I shot mine this AM with Redfield International rear and Freeland front. 200/10X and 200/9X. Nice rifles.
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Old 09-05-2019, 05:22 PM
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Originally Posted by Keeley View Post
What scope in the 2nd pic? I shot mine this AM with Redfield International rear and Freeland front. 200/10X and 200/9X. Nice rifles.
It is a 1.25" 10X Unertl Target scope.
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