A note on mcarbo Browning x bolt trigger springs

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Rifleman87

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I have 3 x bolts, all have mcarbo trigger springs. They can be adjusted down to a super light pull (2 pounds, even less), but there is a catch with that. I don’t know how you run your bolt, but I practice running mine like my life depended on it, with all my bolt actions. If you set the trigger pull too low on an x bolt, when you run the bolt hard it will actually decock the firing pin as you cycle the bolt forward / down. I don’t think it would set a primer off, but when you go to shoot nothing will happen, that’s bad. So I find where is too low and go up a bit from there, zero issues to date, many many cyclings.

I don’t recall seeing anything about this on their website, thought I’d put it out there.

I’ve seen this on one savage as well, it wasn’t mine and I don’t know what went on with the trigger group previously. It was an accutrigger though.

Just a word of caution for those modifying their rifles. And if you don’t run your bolt hard it might not be an issue for you.

Happy hunting, stay safe.
 
That is a good test to insure you have a safe trigger with enough sear engagement. Try it with a empty case or dummy round. Often it will decock when run fast on an empty chamber and not with a live round because of the cushioning effect of the cartridge,
Regardless it’s not worth having a light trigger at safeties expense.
 
I've got an Mcarbo spring in my Max LR, no problems even at 1 pound, 14 ounce trigger pull. Slam tested and hammered on at the range to make sure it's 100% safe and reliable. But definitely something to watch out for.
 
mikeyb said:
I've got an Mcarbo spring in my Max LR, no problems even at 1 pound, 14 ounce trigger pull. Slam tested and hammered on at the range to make sure it's 100% safe and reliable. But definitely something to watch out for.
Click to expand...

I never tried that with mine, I just noticed it on rapid / firm operation of the bolt. Have you tried running yours aggressively?
 
Rifleman87 said:
I have 3 x bolts, all have mcarbo trigger springs. They can be adjusted down to a super light pull (2 pounds, even less), but there is a catch with that. I don’t know how you run your bolt, but I practice running mine like my life depended on it, with all my bolt actions. If you set the trigger pull too low on an x bolt, when you run the bolt hard it will actually decock the firing pin as you cycle the bolt forward / down. I don’t think it would set a primer off, but when you go to shoot nothing will happen, that’s bad. So I find where is too low and go up a bit from there, zero issues to date, many many cyclings.

I don’t recall seeing anything about this on their website, thought I’d put it out there.

I’ve seen this on one savage as well, it wasn’t mine and I don’t know what went on with the trigger group previously. It was an accutrigger though.

Just a word of caution for those modifying their rifles. And if you don’t run your bolt hard it might not be an issue for you.

Happy hunting, stay safe.
Click to expand...

"If you set the trigger pull too low" with any rifle you can experience problems as this... it's one of the reasons the factories set their triggers at the settings they do.

Always slam your bolt hard to test after making adjustments...
 
guntech said:
"If you set the trigger pull too low" with any rifle you can experience problems as this... it's one of the reasons the factories set their triggers at the settings they do.

Always slam your bolt hard to test after making adjustments...
Click to expand...


Yes, that does seem obvious. I suppose what I am comparing it to would be something like a Savage accutrigger, where when set to its lowest setting this does not occur (except for the one that I mentioned, but I suspect it was tampered with). Same with the Ruger adjustable trigger. Once aftermarket parts are thrown into the mix things change.
 
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