Re: Firing upon bolt closing
Sounds like you need to go back to the old firing pin spring. To add, there is no advantage in going to a heavier spring, all it will do is give you a heavy bolt lift, and possibly a harmonic problem which will affect accuracy. The factory Savage spring is already to heavy from the get go. I have never had any ingnition problems with any type or brand of primer with a factory and much lighter spring. (Actuly most of my savages have lighter than factory spring, and have never had a problem even with mag primers my 6x47L never has had a problem.) Sounds like you have a firing pin purtursion problem.
You could adjust the sear engaugement on the trigger, and possibly fix the problem, but I would get rid of that heavy spring.
Re: Firing upon bolt closing
Does it fire or does the primer get ignited on the bolt closing? The former being a trigger adjustment and the latter a FP protrusion?
Re: Firing upon bolt closing
My Evolution trigger would slam fire. I had to engage the sear just a little more (1/4 turn) and the problem was solved. 2 oz triggers are touchy little things. Even Jewels have to be re-tuned/re-set occasionally. Luck, Tim
Re: Firing upon bolt closing
Quote:
Originally Posted by stangfish
Does it fire or does the primer get ignited on the bolt closing?
As seen in the video above, I can work the bolt quickly and the firing pin will drop without pulling the trigger, igniting the loaded round. If I close the bolt slowly,
it does not drop the firing pin...at least not yet in my limited testing.
I'm hoping I just need a little more sear engagement with the stiffer firing pin spring. I believe I'll try adjusting that first,
hoping it will correct the unwanted firing condition. I want to keep the stiffer spring in if possible to see if it fixes the
failure to ignite issue that was occuring previously. Certainly didn't fail to fire yesterday. Firing pin protrusion does not seem
to be a problem...near as I can measure it.
Thank you all for the input.
-Rick
Re: Firing upon bolt closing
Quote:
Originally Posted by tiny68
My Evolution trigger would slam fire. I had to engage the sear just a little more (1/4 turn) and the problem was solved. 2 oz triggers are touchy little things. Even Jewels have to be re-tuned/re-set occasionally. Luck, Tim
Yep, Your on the right track now!
Re: Firing upon bolt closing
Definitely a lack of sear engagement.
Re: Firing upon bolt closing
Quote:
Originally Posted by Switchbarrel
Rechambered to 6 Dasher. Denting some primers, not igniting them...no other trigger/firing problems.
Are you shooting reloads? and if so, did you size them or someone else. Sounds like either a headspace problem or the shoulders were set back a little to far. Heavier spring on the firing pin is NOT going to make it reach any farther. Savage firing pin springs are 3 to 4 time's MORE than needed for ignition. Really sounds like the case is not tight to the bolt head and is being pushed by the firing pin, which is using up most of the striking energy. Try the factory spring and load a couple of rounds with the bullets jammed in the lands. that will keep the round up tight to the bolt head and see if any FTF. As for the firing when you close the bolt, Sounds like the trigger is adjusted to low. Sorry to hear about the problems, Firing when you don't want and not firing when you do.
Re: Firing upon bolt closing
Quote:
Originally Posted by SMK Shoe
Quote:
Originally Posted by Switchbarrel
Rechambered to 6 Dasher. Denting some primers, not igniting them...no other trigger/firing problems.
Are you shooting reloads? and if so, did you size them or someone else. Sounds like either a headspace problem or the shoulders were set back a little to far. Heavier spring on the firing pin is NOT going to make it reach any farther. Savage firing pin springs are 3 to 4 time's MORE than needed for ignition. Really sounds like the case is not tight to the bolt head and is being pushed by the firing pin, which is using up most of the striking energy. Try the factory spring and load a couple of rounds with the bullets jammed in the lands. that will keep the round up tight to the bolt head and see if any FTF. As for the firing when you close the bolt, Sounds like the trigger is adjusted to low. Sorry to hear about the problems, Firing when you don't want and not firing when you do.
For the sake of discussion I have heard a lot of people talk about how overpowered the spring is on a savage. This may be due to the low mass of the savage firing pin. I discovered this when I noticed that most of the aftermarket springs were heavier. Good read if you are working on your own bolt. http://www.switchbarrel.com/Spring.htm
Re: Firing upon bolt closing
Quote:
Originally Posted by LHitchcox
Definitely a lack of sear engagement.
+1
Looks like lack of sear to me also.
Re: Firing upon bolt closing
Quote:
Originally Posted by LHitchcox
Definitely a lack of sear engagement.
this...
Re: Firing upon bolt closing
Quote:
Originally Posted by geargrinder
Quote:
Originally Posted by LHitchcox
Definitely a lack of sear engagement.
+1
Looks like lack of sear to me also.
Yep. Seen it many times. That's the reason I quit adjusting other people's triggers lower that 3lbs. I get mine to about 2lbs. Takes alot of filing and stoning to make it safe though.
Re: Firing upon bolt closing
Increasing the mainspring pressure puts more load on the trigger. Increasing the load on the trigger will wear the fine edge of engagement, and this is probably what happened. There is no rifle I know of that needs a 32lb main spring. All it does is increase the cocking effort and makes the trigger pull harder, while affecting the harmonics.
If you were having ignition issues before, it was most likely caused by short firing pin fall.
