Way off center primer strikes - 22lr


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mbt2001
January 29, 2013, 03:58 PM
I bought a Glenfield (Marlin) model 60 for $40.00. I cleaned it up and then test fired four rounds and every single round was struck way off center. I mean the last centimeter or millimeter of the rim. Is that a problem that is not a problem? Each one fired, no FTF's, but I did notice that they (strikes) were literally on the extreme edge of the cartridge.

Problem? Will it get worse? Can it be remedied?

Thanks, but I do not have a ton of experience with the marlin/glenfield. I an familiar with off center strikes on .22's, but again, these strikes were out from under the cartridge body on the very edge, the rim, and barely at that.

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rcmodel
January 29, 2013, 04:01 PM
Check the tip of the firing pin for a chip missing.

rc

allaroundhunter
January 29, 2013, 04:03 PM
It is called a "rimfire" for a reason. The firing pin hits the rim of the cartridge. There is not a primer in the center...

Not a problem. As such it cannot get worse. If you try to remedy it, then you will have a problem.

Surf
January 29, 2013, 04:06 PM
:)

http://en.wikipedia.org/wiki/Rimfire_ammunition

Fryerpower
January 29, 2013, 04:07 PM
Normal rimfire photo attached. Is your rimfire worse than that?

Jim

mbt2001
January 29, 2013, 04:19 PM
Normal rimfire photo attached. Is your rimfire worse than that?

hmmm... It seems like the strike overlapped, part hitting, part not.

I have never seen one so far over, but I usually shoot revolvers and lever / single shots. Maybe it is normal as you guys say.

Jackal
January 29, 2013, 04:22 PM
Haha, yes, its normal.

Fryerpower
January 29, 2013, 04:37 PM
Go back to post number 4 and go to the link on Wikipedia. It has a good write up on what exactly a rimfire cartridge is.

There are no stupid questions. Even if this turns out that your gun is perfectly fine, there are no stupid questions. I would rather see you ask the question than to not understand what you are seeing.

Jim

chris in va
January 29, 2013, 04:57 PM
Both my Henry and CZ Kadet hit the very edge of the rim, nowhere near the coverage in the picture.

Fryerpower
January 29, 2013, 05:05 PM
I would love to see a photo of the OP's cases. He may know exactly what a rimfire is and that his are not like they should be, but I can't tell by what he has posted. I've got a box of spent .22 brass at home. I'll take a look at it later and see what it looks like. (My son likes to pick up brass at the range. I figure at worst I can sell the .22 stuff for scrap.)

Jim

NeuseRvrRat
January 29, 2013, 05:25 PM
2800 posts on a gun forum

doesn't know what rimfire means

hmmmm

Fryerpower
January 29, 2013, 05:31 PM
2800 posts on a gun forum

doesn't know what rimfire means

hmmmm
I agree, but his origin post left people with a lot of questions about that. He posted "...were literally on the extreme edge of the cartridge" and "...these strikes were out from under the cartridge body on the very edge, the rim, and barely at that." Statements like that will make you wonder.

I am expecting him to come back and let us know that he understands what a rimfire is and that this is an actual problem with the way the strike looks. Hopefully with pictures.

Jim

mbt2001
January 29, 2013, 05:37 PM
:rolleyes:


I will post a pic. Not a normal strike, like the kind I get from my revolvers. Looks like a needle hit the extremist edge of the rim. Don't know how to say it any better. It is surprising that it popped. If you can imagine a point of a needle overlapping the rim.

Since I have never used a Model 60, I wasn't sure if it was normal. Obviously the answer is this is not normal.

Inebriated
January 29, 2013, 05:38 PM
It's destroyed. I'll take it off your hands for $60, just so you recoup your costs..

BCCL
January 29, 2013, 05:47 PM
If every shot goes "bang", then don't worry.

rcmodel
January 29, 2013, 05:52 PM
See post #2.

rc

Jorg Nysgerrig
January 29, 2013, 06:04 PM
Perhaps we should see what the picture looks like before any further judgement.

mbt2001
January 29, 2013, 06:14 PM
The iphone was having trouble focusing, but you can see what I mean. The extreme edge, nothing like a normal strike. It is a bit deeper than is showing up on the pic...

http://i1305.photobucket.com/albums/s542/mbt2001/photo_zps42f19f5c.jpg

http://i1305.photobucket.com/albums/s542/mbt2001/3_zps7b36245e.jpg

http://i1305.photobucket.com/albums/s542/mbt2001/photo2_zps1f4a3926.jpg

Fryerpower
January 29, 2013, 06:15 PM
Dang! That can't be right!

Jim

rcmodel
January 29, 2013, 06:16 PM
Yep!
Thats wrong alright.

Check for a broken firing pin, or a chip off the business end.

rc

mbt2001
January 29, 2013, 06:17 PM
Yep!
Thats wrong alright.

Check for a broken firing pin, or a chip off the business end.

And it will look like it is chipped you say? Do I need a magnifying glass or will it be pretty obvious?

rcmodel
January 29, 2013, 06:20 PM
It should be rectangular on the end in order to make a dent like the one in the photo in post #5.

If it isn't shaped like that, it can't make a dent like that.

It may also be broken clear in two in the middle of the bolt.

rc

Fryerpower
January 29, 2013, 06:27 PM
I looked through some of the old range brass I have in a bucket. Most are thick strikes like the one in the photo. I did find one that was very skinny, but even it went the full length of the thicker strike. You are probably missing half of your firing pin!

Jim

pseudonymity
January 29, 2013, 06:28 PM
The FP could be broken inside the bolt, or I think the FP in a Mdl 60 is held in the channel by a pin through the bolt above the FP channel. The pin keeps the FP from riding up into receiver since the bolt/receiver fit is not really all that tight.

Fryerpower
January 29, 2013, 06:32 PM
http://www.midwayusa.com/product/955069/marlin-firing-pin-marlin-60-60c-60ssk-60ss-60sb-795-7000

Marlin firing pin photo. $6.29 at Midway.

Jim

mbt2001
January 29, 2013, 06:33 PM
Thanks!!!

mbt2001
January 29, 2013, 06:34 PM
http://i1305.photobucket.com/albums/s542/mbt2001/photo4_zps00a957d8.jpg

This one is obviously the first rnd fired and the pin was damaged thereafter. Weird...

This is the 3rd firing pin I have had go on me in as many months. I mean, I know this gun is "new" to me but old at the same time, but I just got back a Rossi 357 because it's firing pin shore off and a Smith 6906 wasn't firing for a bad firing pin.

:scrutiny:

cal30_sniper
January 29, 2013, 07:25 PM
If you dry fire a lot, make sure you are putting a spent case in the chamber to absorb the blow of the firing pin. With a rimfire, if you don't have a dummy case in there, the firing pin slams into the chamber of the rifle every time you dry fire it. This can cause them to break off in very short order.

BCRider
January 29, 2013, 09:18 PM
However you got the firing pins from may have gotten a batch which wasn't heat treated correctly. If they are not tempered deeply enough they'll be too hard and brittle. If you can try to get your next pin from a different source and hopefully that one will be from a different batch.

rcmodel
January 29, 2013, 09:23 PM
Do Not dry fire a lot and you won't break so many firing pins.

Order a real Marlin firing pin from Marlin or Brownell's and it won't break again unless you dry-fire a lot.

http://www.brownells.com/rifle-parts/bolt-parts/firing-pins/firing-pin-sku550000348-8343-20665.aspx?ttver=2

rc

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