Browning X bolt trigger

Joined
Jan 1, 2014
Messages
6
Location
Colorado Front Range
I have a browning x bolt pro and love it. I would like to get a lighter trigger and have come across the M Carbo trigger spring. Has anyone used them or know about them?
 

Gen273

WKR
Joined
Apr 27, 2020
Messages
513
Yes, I have used them, and I am happy with the results. I think I have them in three Browning rifles.
 

92xj

WKR
Joined
Apr 22, 2016
Messages
1,245
Location
E.Wa
Yep. Used one, was an improvement but I wanted better, so I scrapped it and went to a timney which I enjoy a whole lot.
 

Kal-Elk

Lil-Rokslider
Joined
Feb 12, 2020
Messages
165
Location
Anchorage, AK
I have one installed in my 308, made a significant difference over the stock trigger. For the price, at least compared to the timney, can't beat it. And if you still end up heading down that route it's not like you're out that much anyways.
 
Joined
Jun 15, 2017
Messages
2,369
Location
San Antonio
I've used the mcarbo springs in a bunch of rifles and they're a great cheap upgrade. Only problem I've had is an old Win 70 where that spring leads to about 1/2 lb pull, freaking dangerous. I'll be putting the factory spring back and leaving it alone.
 

Darryle

WKR
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Nov 25, 2016
Messages
657
Location
Fort Worth, Texas
*****Posted this before, perform at your own risk and drop test repeatedly*****


****Performing any modifications to your rifle may create an unsafe condition and are not recommended by me****


The ever so slightly longer spring on top is the MCarbo. Adjusted until the screw was a half a thread from falling out the lowest average was 2lbs 10oz.

The Yo Dave spring on the left set as per the instructions for the MCarbo yielded an average of 2lbs 6oz, same setting yielded an average pull of 2lbs 14.8oz with the MCarbo.

So, I thought, I have 2 springs and one gun, let's cut one up and see what happens.

I cut a full round off of the MCarbo, set it as per their instructions, average pull was 2lbs 10oz, backed out until just a half a thread was holding it averaged 2lbs 4oz.

Removed it 2 more times and trimmed a little off the last coil, reinstalled and tested, set per the instructions it yielded 2lbs 5oz with the first trim, second trim was pay dirt, 2lbs 0.1oz average over a ten pull test.

Reassembled and did a vigorous bump/drop test, to the point my buddy thought I was going to bust the stock, 10 bumps and then a pull test, 3 different times and the average pull was 2lbs 0oz, each pull test was exactly the same, which is surprising since they always vary 2-3oz.

So, I don't recommend that you or anyone else cut their spring, but if you want as close to a 2 1/2lb trigger pull as possible, the Yo Dave spring is highly recommended.

Just a heads up, they ship Canadian post, you will not receive tracking information, it just shows up about 2 weeks later giver or take, it could have been in the mail box a few days.

If you are confident in your abilities, then you can modify your spring as you see fit, but order 2 of them for safe measure. Start small and trim small each subsequent time, and vigorously bump/drop test your rifle.

A 2lb flush X-Bolt trigger is a thing of beauty, rivaling the Tikka T3x trigger with an Ernie The Gunsmith Varmint spring.

Good luck and be safe!

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Last edited:
Joined
Oct 1, 2018
Messages
716
Location
Knoxville, TN
I went with the Timney. I have 3 X Bolts and only 1 had good results with the M Carbo springs. Funny that each of the triggers was so different.
 
Joined
Nov 27, 2022
Messages
368
MCarbo is a huge improvement over stock. Not quite to the level of an aftermarket trigger, but makes it a pretty solid trigger if you don’t need it super light.


Sent from my iPhone using Tapatalk
 

raske007

FNG
Joined
May 2, 2022
Messages
17
Location
New Hope, MN
I used the mcarbo spring and thought it was an ok improvement. I opted for the Timney trigger. Wasn't excited about losing the bolt feature but the better trigger was worth it in my opinion. It did involve so messing around with the hunter stock to make it fit perfectly though.
 

michaema2

FNG
Joined
Jun 2, 2023
Messages
14
I have installed the M Carbo spring in two different x bolts. One had very good results and got the trigger around 2.5 lbs. The other didn't seem to do as much, got to just over 3 lbs.
 

bline

FNG
Joined
Nov 11, 2016
Messages
69
Location
Montana
I just installed an Mcarbo in my Speed and it was a huge improvement.
 
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Wi_fowler

FNG
Joined
Mar 14, 2023
Messages
13
Another vote for the m carbo trigger spring, made a big difference on my x bolt long range 30-06, I’ve installed 5 of them on different rifles, they have all worked, some better than others. Worked the best on the tikka made the trigger pull very light, borderline too light for hunting purposes.
 

muzz

FNG
Joined
Jun 11, 2016
Messages
86
I put a mcarbo in my x bolt, can’t get it to work . cycling the bolt the trigger goes off no matter how it’s adjusted. Now I’m screwed .
 

Finn16

WKR
Joined
May 9, 2017
Messages
337
Location
Seldom Seen Saddle
I guess I'm in the minority but I wasn't happy with the mcarbo spring. I bought one I liked a lot better off ebay from Gunbloke - located in Australia. They take a while to arrive but worth the wait.
 

Darryle

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Classified Approved
Joined
Nov 25, 2016
Messages
657
Location
Fort Worth, Texas
I put a mcarbo in my x bolt, can’t get it to work . cycling the bolt the trigger goes off no matter how it’s adjusted. Now I’m screwed .

I have a stock X-Bolt trigger you can have if you cannot get it sorted out, IIRC it's out of a stainless rifle.
 
Joined
Dec 30, 2014
Messages
9,510
Mcarbo spring worked to reduce trigger pull in my sample of one and has been drop safe. Its maybe 2.5-3# now IIRC.
 
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