Can anyone explain these marks on my primers
- Thread starter Led66
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NCsmitty
Member
Possibly debris on your priming tool? Your FP seems to overstrike on a couple cases.
NCsmitty
NCsmitty
ReloaderFred
Member
It's called hammer bounce, and looks like the cylinder is unlatching when fired, hence the off center second firing pin indentations.
Hope this helps.
Fred
Hope this helps.
Fred
I wish it was the priming tool. But the marks showed up after firing. The guy who owned it before me put in a 9 lb hammer spring. I restored it to the factory 15 lb spring. And the single brass piece is with the 15 lb spring. The others were the 9 lb
ReloaderFred
Member
I'd fire it with some lighter .45 Colt loads and see if you get the double firing pin indentations. If you don't, then it's caused by the recoil of the .454 overcoming the hammer spring. I'd also try it with some factory ammunition, too.
You might give Ruger customer service a call, but they're just tell you to send it in so they can check it. They may give you a mailing label, though, and pick up the shipping charges. It might be worth the call. They won't like the fact you're shooting reloads, so you might not want to mention that if you call.
Hope this helps.
Fred
You might give Ruger customer service a call, but they're just tell you to send it in so they can check it. They may give you a mailing label, though, and pick up the shipping charges. It might be worth the call. They won't like the fact you're shooting reloads, so you might not want to mention that if you call.
Hope this helps.
Fred
32_d3gr33s
Member
i had the same marks with my very hot load .357 loads in my LCR... more than likely just too much recoil overcoming the hammer spring. back off a tad and it should be ok
I'm agreeing with Fred. The guy put in the light trigger return spring. I'm not sure if it's function so I'm gonna replace it with OE. The only thing thats making sense to me for,the second dent to be so off center is the wheel must be turning. (thanks Fred) sometimes it just takes a second set of eyes to open our own lol
What I was taught was when the pin hits the primer it pushes the case forward and in that brief moment when the explosion happens it pushes the case back against the fire pin. But what boggled me was why it's off center. I just needed duh moment. The wheel is turning. So what ever locks that must be worn out. Maybe time for a gunsmith.
32_d3gr33s
Member
i doubt that the cylinder is turning though... if it is, mine was doing it from day 1 out the box. Backed off the charge weight and no more marks
243winxb
Member
The red hawk firing pin is fixed. The cylinder is unlocking when firing, rotating backwards, is my guess. The hammer bounce makes the 2nd mark. The old S&W when the hammer nose (firing pin) is on the hammer also makes a 2nd mark from hammer bounce. Same mark, but different method. Jerry Miculek on youtube has some slow motion videos testing muzzle breaks. The revolvers hammer bounces ever shot.
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lauderdale
Member
I Might have missed something? What KIND OF PRIMER WAS IT?
stubbicatt
Member
If that is hammer bounce causing that second indentation, that indicates that the cylinder lock is not holding things, and perhaps is bouncing out of the cylinder notch. I think if it were me, I would very carefully fire one round, and without releasing the trigger, see if I can turn the cylinder by hand after firing. If I can turn the cylinder to the next chamber, I would not shoot that revolver any more.
lauderdale
Member
Reason being, I was getting close to max load w/G42 380 W/ B.E. using WIN.SPP. Changed over to cci"s not a problem.
243winxb
Member
stubbicatt +1
W.E.G.
Member
Cylinder has to be un-latching, and second indentation is evidence of hammer bounce.
Is your hand contacting the latch during firing?
Get somebody to video you.
Is your hand contacting the latch during firing?
Get somebody to video you.
CraigC
Sixgun Nut
Could be that the springs are not the only thing the previous owner monkeyed with.
ArchAngelCD
Member.
Break out the popcorn because the show is about to start!
FROGO207
Member
At least they could have used a more appropriate part of his anatomy to reproduce in the micro-stamp image. 
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