I installed a Timney 510U on a surgeon action and am not getting even light primer strikes now. It appears that the firing pin is not being fully released forward when the trigger is pulled. It moves and makes a soft "snick", but not nearly the same distance as when the bolt is manually moved from cocked to the fire position when out of the rifle. I assume something needs a little filing but am not sure the best way to go about it. I've put in Timneys in other rifles and haven't come across this problem before. Any help would be appreciated.
Gunsmithing Timney woes
- Thread starter vetski
- Start date
Re: Timney woes
Is it doing this on every shot or is it intermittent?
Is it doing this on every shot or is it intermittent?
Re: Timney woes
every shot. Previous trigger was a remington, which worked fine.
every shot. Previous trigger was a remington, which worked fine.
Re: Timney woes
The geometry is different for some reason on the Timney triggers and their sear sits lower allowing less contact with the angled sear, this makes the firing pin sit further forward than a factory trigger. They make a version with a longer sear, which holds the firing back further, allowing a harder primer strike. You can call them, the version with the longer sear is made specifically for the Defiance actions, but I think it might fix your issue. I ended up putting in a stronger firing pin spring to further help with my light primer strikes, and haven't had a problem since. One thing for sure, Timney is great to work with, and their customer service should get you handled up right.
If you look at how far back your firing pin sticks out the back of the bolt with your 510U compared to your old trigger, it will show you if this is the problem or not.
HTH Dave
The geometry is different for some reason on the Timney triggers and their sear sits lower allowing less contact with the angled sear, this makes the firing pin sit further forward than a factory trigger. They make a version with a longer sear, which holds the firing back further, allowing a harder primer strike. You can call them, the version with the longer sear is made specifically for the Defiance actions, but I think it might fix your issue. I ended up putting in a stronger firing pin spring to further help with my light primer strikes, and haven't had a problem since. One thing for sure, Timney is great to work with, and their customer service should get you handled up right.
If you look at how far back your firing pin sticks out the back of the bolt with your 510U compared to your old trigger, it will show you if this is the problem or not.
HTH Dave
Re: Timney woes
Thanks, I have a message in to Timney, maybe they'll suggest the longer sear. Didn't notice a change on how far back the firing pin sets, maybe I'll switch back to the Rem and see what it looks like.
Thanks, I have a message in to Timney, maybe they'll suggest the longer sear. Didn't notice a change on how far back the firing pin sets, maybe I'll switch back to the Rem and see what it looks like.
Re: Timney woes
Here's my thread: (note that it still took me a stronger firing pin spring to completely remedy the situation, this was with Lake City Match ammo though, so maybe a hard primer too?)
http://snipershide.com/forum/ubbthreads....592#Post2535592
Here's my thread: (note that it still took me a stronger firing pin spring to completely remedy the situation, this was with Lake City Match ammo though, so maybe a hard primer too?)
http://snipershide.com/forum/ubbthreads....592#Post2535592
Re: Timney woes
I have seen a problem with some surgeon actions and timneys where the pin holes are too far UP or perhaps the timney trigger's sear piece of taller than a remington trigger.
The result is that the cocking piece releases, but then DRAGS on top of the sear, causing a misfire.
In these cases, simply grinding about 0.010" deep and 1/8" wide radiused groove down the middle of the sear piece on the timney trigger solved the problem.
I have seen a problem with some surgeon actions and timneys where the pin holes are too far UP or perhaps the timney trigger's sear piece of taller than a remington trigger.
The result is that the cocking piece releases, but then DRAGS on top of the sear, causing a misfire.
In these cases, simply grinding about 0.010" deep and 1/8" wide radiused groove down the middle of the sear piece on the timney trigger solved the problem.
Re: Timney woes
I saw in another thread that the "U" model was designed by Skunkworks for the defiance and may not work with the Sugeon. I thought the U was for side release actions in general. I'll let y'all know what Timney advises.
I saw in another thread that the "U" model was designed by Skunkworks for the defiance and may not work with the Sugeon. I thought the U was for side release actions in general. I'll let y'all know what Timney advises.
Re: Timney woes
I think you nailed it, probably need the standard version, and not the U.
Hope that works, it is very frustrating to trouble shoot a problem like that.
I think you nailed it, probably need the standard version, and not the U.
Hope that works, it is very frustrating to trouble shoot a problem like that.
Re: Timney woes
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: mike1023</div><div class="ubbcode-body">I installed a Timney 510U on a surgeon action and am not getting even light primer strikes now. It appears that the firing pin is not being fully released forward when the trigger is pulled. It moves and makes a soft "snick", but not nearly the same distance as when the bolt is manually moved from cocked to the fire position when out of the rifle. I assume something needs a little filing but am not sure the best way to go about it. I've put in Timneys in other rifles and haven't come across this problem before. Any help would be appreciated. </div></div>
Mike,
The 510U will not work effectively in the Surgeon action. The timing occurs later than what the 510U was designed to accommodate. The 510 will fix the issue.
BTW, the "U" designates "Underground" from my old business name.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: mike1023</div><div class="ubbcode-body">I installed a Timney 510U on a surgeon action and am not getting even light primer strikes now. It appears that the firing pin is not being fully released forward when the trigger is pulled. It moves and makes a soft "snick", but not nearly the same distance as when the bolt is manually moved from cocked to the fire position when out of the rifle. I assume something needs a little filing but am not sure the best way to go about it. I've put in Timneys in other rifles and haven't come across this problem before. Any help would be appreciated. </div></div>
Mike,
The 510U will not work effectively in the Surgeon action. The timing occurs later than what the 510U was designed to accommodate. The 510 will fix the issue.
BTW, the "U" designates "Underground" from my old business name.
Re: Timney woes
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BlackOps Tech</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: mike1023</div><div class="ubbcode-body">I installed a Timney 510U on a surgeon action and am not getting even light primer strikes now. It appears that the firing pin is not being fully released forward when the trigger is pulled. It moves and makes a soft "snick", but not nearly the same distance as when the bolt is manually moved from cocked to the fire position when out of the rifle. I assume something needs a little filing but am not sure the best way to go about it. I've put in Timneys in other rifles and haven't come across this problem before. Any help would be appreciated. </div></div>
Mike,
The 510U will not work effectively in the Surgeon action. The timing occurs later than what the 510U was designed to accommodate. The 510 will fix the issue. </div></div>
This has been my findings also . Randalls fix will also work very well. Timney will make it right.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BlackOps Tech</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: mike1023</div><div class="ubbcode-body">I installed a Timney 510U on a surgeon action and am not getting even light primer strikes now. It appears that the firing pin is not being fully released forward when the trigger is pulled. It moves and makes a soft "snick", but not nearly the same distance as when the bolt is manually moved from cocked to the fire position when out of the rifle. I assume something needs a little filing but am not sure the best way to go about it. I've put in Timneys in other rifles and haven't come across this problem before. Any help would be appreciated. </div></div>
Mike,
The 510U will not work effectively in the Surgeon action. The timing occurs later than what the 510U was designed to accommodate. The 510 will fix the issue. </div></div>
This has been my findings also . Randalls fix will also work very well. Timney will make it right.
Re: Timney woes
Thanks everybody, it went back to Timney today. Sounds like they'll probably send back a regular 510.
As a lot have mentioned, Timney CS is great. A few years ago I I put one of their triggers in an old tang-safety ruger and it had some minor sear issues. Not only walked me through a DIY fix, but sent out a best-guess replacement sear at no cost.
Thanks everybody, it went back to Timney today. Sounds like they'll probably send back a regular 510.
As a lot have mentioned, Timney CS is great. A few years ago I I put one of their triggers in an old tang-safety ruger and it had some minor sear issues. Not only walked me through a DIY fix, but sent out a best-guess replacement sear at no cost.
