M305 and Pierced Primers

One more thought, whether its cause or effect, but you might want to disassemble the bolt to make sure the pierced primer hasn't resulted in some metal debris within the bolt or around the firing pin. I had some of that on my rifle.
 
Grizzlypeg said:
I fired off 40 rounds of IVI 77 milsurp ammo last night and had 1/40 result in a pierced primer. Smoke coming out of the action, but no malfunctions aside from one casing caught between the bolt and the smith enterprises scope mount. You are getting some pretty good groupings there. Best 5 shot group I could get at 100 yards with that ammo was 2". Often there would be one wild one that was 4-6" off center of the others. The ammo used seems to really make a difference on my guns for both function and accuracy.
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The target shooters learned to avoid IVI when it came to serious bullseyes. It was $hit ammo! I have a Gaillard stainless barrel that was ordered .3065" to squeeze some of those odd bullets into rounder shapes, just to hope for better scores.
 
Grizzlypeg said:
One more thought, whether its cause or effect, but you might want to disassemble the bolt to make sure the pierced primer hasn't resulted in some metal debris within the bolt or around the firing pin. I had some of that on my rifle.
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A "BROWNELLS M1/M14 BOLT DISASSEMBLY TOOL" should arrive any day now. I'll post my findings.
 
The tool which comes with your cleaning kit is a bolt dis-assembly tool!
Re-assembly is a bit of a pain, but I can do mine with a blindfold on, now that Ive done it a few times.The trick is to cut 1 coil off the plunger spring!!!
 
I disassembled the bolt this evening. Nothing of interest was found. In fact, it was rather clean. My initial gasoline soaking appears to have done the trick with respect to removing any cosmoline.

NOW that being said...some one please explain the trick to re-installing the extractor spring!!! I ended up cutting off a bit of the spring; (the piece I mangled) there after I was able to get the whole thing back together.

Hats off to those who disassemble and assemble one of those critters without a disassembly tool!! Even with the tool, I found it quite a challenge.
 
to reassemble the bolt components without cutting the spring i place the bolt "on it's back" (upside down) with the extractor resting on my bench.i make sure the firing pin cutout(notch) is in the correct position(towards the extractor pin-the plunger being in it's slot.i then carefully while applying only slight pressure at first use my combo-tool to twist the extractor into place.
 
the combo tool that comes with an m14s has a small screwdriver tip on the end.there are also 2 notches for the ejector(i forgot about that one).you place that screwdriver tip on top of the extractor and twist.forgive me as i don't remember which part(firing pin or ejector) which has the cutout(notch)
the notches that look like feed ramps on the combo tool push in the ejector as you twist.sorry beer and tech instructions don't mix...;)
 
toyboy said:
the combo tool that comes with an m14s has a small screwdriver tip on the end.there are also 2 notches for the ejector(i forgot about that one).you place that screwdriver tip on top of the extractor and twist.forgive me as i don't remember which part(firing pin or ejector) which has the cutout(notch)
the notches that look like feed ramps on the combo tool push in the ejector as you twist.sorry beer and tech instructions don't mix...;)
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The extractor shaft has a shallow round cutout. At one of the clinics, Hungry mentioned putting the plug in the bathtub, pulling the shower curtain around and only THEN trying to reassemble a Garand/M14S bolt. Those springs will jump off and hide faster than you'll be able to track them in flight.
 
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