Was fire forming Dasher from 6 BR today 105 Grain bullets 30 thou into the lands in my Impact Action. Notice the bolt was a tad bit tight to close consistently just figured it was the jam . I use 205m Primers this time for fire forming, noticed a few were very close to pierced but not pierced all the way through. Well low and behold my TT diamond started to fail and ultimately started slam firing and would not hold the firing pin weight anymore. Anyone else had this happen? If so what is the cause? Curious where I went wrong.
6 Dasher Fire Forming Trigger Failure
- Thread starter Walker TR
- Start date
I have the exact same setup and fire formed with same primers and bullet. However I have a bix n Andy trigger. I don’t think it had to do with fire forming but I had a firing when closing the bolt shortly after finishing fire form loads and I was shooting a match. I just adjusted the sear engagement and it went back to shooting. 800 rounds later and hasn’t happened again. I’m not sure if the TT diamonds have that option. May just need cleaning or possibly got some lube in the trigger? And the sear isn’t holding with enough friction.
Trigger techs have a history of shitting the bed when a primer gets pierced.
I’m sure whoever it is that had tt tell him they werent going to replace his anymore if he continued to pierce primers will be in shortly.
Use a harder primer such as 450 or 41 and false shoulder your cases.
Also, how much powder are you cramming in there?
I’m sure whoever it is that had tt tell him they werent going to replace his anymore if he continued to pierce primers will be in shortly.
Use a harder primer such as 450 or 41 and false shoulder your cases.
Also, how much powder are you cramming in there?
Had a similar issue. Sent the trigger back as I thought the sear was broken. TT told me it wasn't but was "gummed up" by oil. R...I....G....H....T.....!!
They recommended occasional cleaning of the trigger assembly with lighter fluid.
To save yourself a 6 week turn around from TT (they are in Canada). Try flushing the trigger with lighter fluid. The using with a slightly heavier trigger pull. If this fails - send it back.
Andrew
They recommended occasional cleaning of the trigger assembly with lighter fluid.
To save yourself a 6 week turn around from TT (they are in Canada). Try flushing the trigger with lighter fluid. The using with a slightly heavier trigger pull. If this fails - send it back.
Andrew
A lot of shooters get away with just jamming on the dasher, but there is risk involved with this method because you are relying 100% on the bullet holding the case against the bolt face. Bullets can slip.
BR guys have been doing this a long time and you'll see a lot of recommendations to use the false shoulder method with a soft primer. The idea is the soft primer will ignite more quickly, where as a harder primer will resist and increase chance of case pushing forward before ignition.
You know you are forming correctly when the case comes out shorter than what you started with.
To me the preferred methods are false shoulder, hydro or Alpha.
BR guys have been doing this a long time and you'll see a lot of recommendations to use the false shoulder method with a soft primer. The idea is the soft primer will ignite more quickly, where as a harder primer will resist and increase chance of case pushing forward before ignition.
You know you are forming correctly when the case comes out shorter than what you started with.
To me the preferred methods are false shoulder, hydro or Alpha.
Have been fire forming for years in Dasher and have never run into this problem. Tried false shoulder, that takes too much time, hydroforming...ehhh...I will just buy from Hunts Long Range....Alpha (pressure issues). I may just swap back to my Bix triggers never had this problem with them
Never have had issues with fireforming. Simple 30g Varget, 0.030" jammed into lands, CCI Mag Small rifle primer, practice positional shooting at 450yds. Simple. Works every time.
My only broken TT Diamond trigger occurred during the GAP Grind. It blew 9 points for me.
Andrew
My only broken TT Diamond trigger occurred during the GAP Grind. It blew 9 points for me.
Andrew
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