Striker spring rate

[hbchuey]

I know that the apex competition striker spring is longer than the stock one but is it heavier or lighter than the stock spring?
I'm asking because today at the range I had a few ftf's and am wondering if it was caused by light strikes or the primers. I've always used Federal primers but I'm trying out some Tula Ammo primers and am not liking the results so far.
For the record I had 13 ftf out of a 100 with the Tula's and before I call Powder Valley complaining I want to make sure it's not being caused by the spring I have in my gun.

 

[Carnage_7]

I would say the problem is with the Tula primers-13 out of a 100 is unacceptable!!! Did you try to shoot them a 2nd time to see if they would fire?

 

[hbchuey]

Just the first 3. 2 of the 3 fired second time through