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Posted: 10/2/2016 1:46:48 PM EDT
[#1]
Try using a standard 9mm buffer.
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Posted: 10/2/2016 4:30:51 PM EDT
[#2]
Can't see where a buffer would cause pierced primers, but I could be wrong..........usually result of excessive firing pin protrusion. As 9mm is an inertia firing pin, I would remove the spring, drop the FP in the bolt and measure the protrusion of the pin from the bolt face.....minimum (.028") and maximum (.036") protrusion. Too little and you have misfires...too much you have pierced primers. Also...if the tip of the firing pin is chipped or cracked and has a sharp edge, this can cause your problem, this is real easy to overlook in a pin that rarely gets removed from the bolt.
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Posted: 10/3/2016 3:58:49 PM EDT
[#3]
Tried the simplest thing of all, I used different ammo and no more pierced primers. I was getting the pierced primers with Remington 147 gr, I tried some Freedom Munitions 147 gr and not a single pierced primer. The crater in the Remington fired primer was larger diameter and deeper than the Freedom ammo, leading me to believe the Remington primers are maybe a softer steel? At any rate I have a whole case of this Remington, can I use it up or will it damage the firing pin. It didn't pierce every round, only about one out of three.
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Posted: 10/3/2016 8:54:53 PM EDT
[#4]
Primers are made of brass - the silver ones are nickel plated. But it is quite possible that the primers are the problem. I'd also take a very close, magnified look at the tip of your firing pin; it could be a bit "sharp," which would make it harder on thinner primer cups.
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Posted: 10/4/2016 10:58:52 AM EDT
[#5]
I looked at the tip of the firing pin and it has a tiny convex raised area on the very end, not sharp at all. I'm thinking it must be the primer hardness and/or thickness. Didn't know the primer's were brass, learn something new everyday :-) . The Remington must be nickel plated and the FM are plain brass.
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Posted: 10/4/2016 3:30:53 PM EDT
[#6]
Quote HistoryQuoted:
Tried the simplest thing of all, I used different ammo and no more pierced primers. I was getting the pierced primers with Remington 147 gr, I tried some Freedom Munitions 147 gr and not a single pierced primer. The crater in the Remington fired primer was larger diameter and deeper than the Freedom ammo, leading me to believe the Remington primers are maybe a softer steel? At any rate I have a whole case of this Remington, can I use it up or will it damage the firing pin. It didn't pierce every round, only about one out of three. I would still measure the firing pin protrusion like Mad-Machinist said.... IMHO it is not normal to have any pierced primers. particularly, Remington's 1 1/2 primers. |
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