| RAC |
| (.224 member) |
| 10/10/07 08:56 AM |
Light firing pin strike
|
I have a 98 Mauser in 9.3 x 62 which last summer I had a couple of times where the firing pin had a very light primer strike in which it did not fire. I replaced the bolt with a 19# spring and on the third shot today I had it happen again. Subsequent shots were okay. Any suggestions on what may be causing this problem?
| John303 |
| (.300 member) |
| 10/10/07 10:39 AM |
|
Re: Light firing pin strike
|
Just a guess or two, one would be that the firing pin is a tad short, the other, if you load your own? over zealous primer pocket cleaning "going a bit deep" with the primer. As I stated just a guess. --- John 303.
| DarylS |
| (.700 member) |
| 11/10/07 12:01 AM |
|
|
Re: Light firing pin strike
|
Al primers must be seated to the bottom of the pocket. If not, the force of the pin's thrust must seat the primer fully before ignition can take place. This can absorb energy that is needed to fire the primer.
: Make certain the primer is bottom'd out.
: Remove the bolt, turn the shroud so the bolt is 'fired' and measure the protrusion of the pin. It should be not less than .050". If it is, it needs to be replaced.
: Military and other older actions that have seen a lot of use and blown primers and have had their pins smoothed off once or twice to prevent piercing, may end up a bit short.
: The only 'fix' for htis is a new pin.
: I prefer a 22# to 26# spring on my Mauser actions that see use in the hunting field and normally use 24# on my target '98 actions. Some people don't like them that heavy, complaining of too much action 'jar' but I've never had any difficulty, even with the match (position) rifles.
| Marrakai |
| (.416 member) |
| 11/10/07 12:24 AM |
|
|
Re: Light firing pin strike
|
Check the headspace, that's another possibility. Are they factory loads or reloads?
| RAC |
| (.224 member) |
| 11/10/07 12:47 AM |
|
Re: Light firing pin strike
|
I am using reloads, 250 gr TSX, new Laupa brass and the primer pockets have been uniformed. It is an old military that has been converted. I will check the firing pin next.
| szihn |
| (.400 member) |
| 11/10/07 01:31 AM |
|
Re: Light firing pin strike
|
I have seen this before.
In some cases it's a piece of old primer that's gotten blown into the bolt body and it gets between the shoulder of the striker and the bolt itself.
Take a 45 cal cleaning brush and clean out the inside of your bolt body. Clean the forward shoulder of the striker too. If something is stuck on the striker, it's very visable, but if you didn't look for it, you might miss it.
I can't say that's whats happening to you, but it sure sounds like it:)
SZ
| RAC |
| (.224 member) |
| 11/10/07 01:38 AM |
|
Re: Light firing pin strike
|
I see it will fire the striker with the bolt handle slightly raised. I wonder if that is my problem.
Firing pin measures just a tad over .050.
| RAC |
| (.224 member) |
| 11/10/07 06:12 AM |
|
Re: Light firing pin strike
|
...Just got back from shooting. I was careful to pay attention to the position of bolt handle and had no misfires. It still may be something else but so far so good.
| ALAN_MCKENZIE |
| (.400 member) |
| 12/10/07 12:00 AM |
|
Re: Light firing pin strike
|
Replace the firing pin,clean the bolt body out,fit a new #22 spring and check head space.
That should solve your problems.
Nothing worse that wondering if you are going to have a missfire.
Al