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rangermonroe
August 31, 2006, 09:01 PM
After shooting a few rounds the the rifle, it began to FTFire. For whatever reason, I kept trying to shoot. It failed about 10x.

I suspected a broken pin, but that was not the case.

I noticed a funny springy noise when i attempted to fire. So, I dry fired it, and it sounded normal.

It fired fine after that for about 10 rounds. Then, the funny sounding "sproing!".

Dry fired it, problem solved.

What the heck do you think that it might be?

I have not yet had a chance to dissasemble the bolt.

tINY
August 31, 2006, 09:31 PM
Check the hole where the firing pin comes out of the bolt face.

Also, take the bolt apart and clean it. Make sure you put a light coat of grease on when you are done.

If that doesn't work, try different ammo - it sounds like your primers might be a bit hard and your firing pin protrusion marginal.




-tINY

rangermonroe
August 31, 2006, 11:36 PM
Thanks

Will do.

All of the ammo fired were hand loads.

After the dry fire, the misfire rounds fired without exception.

Harry Bonar
September 1, 2006, 12:31 PM
Dear Shooter
Never fire anybodys handloads in your rifle!
The cases you're firing may have been over-resized by your buddy.
To resize cases for YOUR rifle screw the sizer die down until it touches the shell holder (with the ram in its "top dead center" )- (it will cam over) and then back off 1/2 turn - size a case - it probably won't chamber!
Keep screwing your die down until you just can feel the bolt close on the case. That's the proper size for your rifle.
Always trim and chamfer after sizing.
Harry B.

rangermonroe
September 2, 2006, 09:04 AM
Dear Harry,

They were my reloads for my rifle.

After dryfiring, the rounds fired fine.

There was no dent or mark on the primer when they failed to fire.

Thanks

Ausserordeutlich
September 5, 2006, 08:50 PM
I think your plan to disassemble the bolt is a good plan. However, contrary to other advice in this thread, I wouldn't put any grease on the firing pin or spring. Thin coat of oil would be more reliable, longer.

Unclenick
September 6, 2006, 11:38 AM
If you have no firing pin strike on the misfired rounds, then it sound like the sear let go without the mechanism having cleared the cocking cam. In other words, it is like you have the bolt just slightly open. It makes me wonder if your ammo is maybe not allowing the bolt to close that last degree or so, especially since dry-firing presents no problem? If the bolt were open a crack, the mainspring would be bearing against the cocking cam and firing pin would not clear the boltface. This is a safety feature in that it prevents discharge with a partially closed bolt. You could very well hear the spring in the bolt, then, because its expansion would be retarded and the sound wouldn't be masked by a shot going off.

Nick