Discussion in '6BR, 6BR Improved & Wildcats' started by Nature Boy, May 31, 2018.
A trigger hanger is the easiest way to increase pin fall. Pin protrusion is different.
Pin fall is the firing pins distance traveled from cocked to fired.
Firing pin protrusion is amount sticking out of the bolt after fired. As Alex said.
Edit: firing pin protrusion should be no where near .240 or .250 lol. More like .060. Depending on preference and spring rate.
Ok..so increasing pin fall gives the pin more striking power against the primer because it’s being cocked further back?? But pin protrusion stays the same?
My ackley Swede had 4 misfires on lapua brass using cream of wheat. All four brass measured short. Tight neck and .020 jam on a bullet got it done.
The target on the bench looked good! Keep us updated.
Did you get a chance to pull your bullets? Or get anything figured out? I am interested to see what happened/fixes your issue.
I have to jam my BRA to +.020 when fireforming and still get a few ftf's, drop the pin on them 3 times nothing, take them out then rechambered and they went.
I’ve been out of town all week. I’ll have some info when I get to the range this weekend
That d@mn work thing. Always getting in the way of our hobbies. Lol
If this crap was free I would have turned in my retirement notice on Monday
I beat the bullets out of the 22 rounds that didn’t fire (all had powder, as I knew they would) and loaded 10 back up with the same load, including the #450 primers, but jammed the bullets 0.010 into the lands this time.
On the second go round 2 out of 10 failed to ignite. 20% is an improvement over 44%, but not good enough to use them for fire forming. I loaded more fire forming rounds with Fed 205m, CCI #400 and Rem 7 1/2 primers and all 30 of these fired.
I’ll try the #450s again with fire formed brass and see if the issue with these persists
I’ve found that the 450s have 100% strike rate after cases are ff..
I used the Fed GM205M yesterday doing my 1st ladder at 300yds with a BRA with H4895 103VT's 15in. 30.1 to 30.5 44fps ES and all 5 shots stayed in just over 1/2" in a light breeze with 1/4" vert. I still have to play with seating and the Ezelle tuner. That will be done next weekend at Williamsport. What i am getting at is the Fed primers will be fine if they are going BANG for you.
ps: I FFed 100 pieces with the mentioned primers and all went BANG......
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