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  #16  
Old 03-21-2017, 01:17 PM
Dennis D
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Excuse my ignorance but....



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Why should the firing pin ever contact the barrel at all????
None of my rimfires have a firing pin that protrudes far enough to contact the barrel when in the fired position. They all have aprox. .038 or so protrusion so with a head space of .043 there should be no problems with cone or slotted barrels.



Dennis
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  #17  
Old 03-21-2017, 05:30 PM
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Quote:
Originally Posted by Dennis D View Post
Why should the firing pin ever contact the barrel at all????
None of my rimfires have a firing pin that protrudes far enough to contact the barrel when in the fired position. They all have aprox. .038 or so protrusion so with a head space of .043 there should be no problems with cone or slotted barrels.



Dennis
That is what I was thinking Dennis. Just was not sure. I will do some measuring
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  #18  
Old 03-21-2017, 06:37 PM
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DennisD said in part "None of my rimfires have a firing pin that protrudes far enough to contact the barrel when in the fired position. They all have aprox. .038 or so protrusion so with a head space of .043 there should be no problems with cone or slotted barrels."

You do realize that in the fired position many pins are at rest and not extended to the point of hitting a case. If that were the case how would you ever rotate the bolt to extract a case? You need to measure how much the pin extends beyond the bolt face at the point of ignition, not after. Me, I ain't smart enough to tell you how to make that measurement. bob
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  #19  
Old 03-21-2017, 06:55 PM
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Quote:
Originally Posted by Dennis D View Post
Why should the firing pin ever contact the barrel at all????
None of my rimfires have a firing pin that protrudes far enough to contact the barrel when in the fired position. They all have aprox. .038 or so protrusion so with a head space of .043 there should be no problems with cone or slotted barrels.



Dennis
With a cone breach and nothing in the chamber the bolt is not held back against the locking lugs. This allows the cone to enter the recess in the bolt face and even if you only have .038 of pin protrusion it will hit the edge of the cone. Headspace and pin protrusion measurments only apply if the bolt itself can't move forward as in when there is a round chambered or a flat breach that stops the bolt.
I am not in any way bad mouthing cone breaches they have their pluses, this is just their minus attribute.
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  #20  
Old 03-21-2017, 08:18 PM
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My pin looks like it measures 35 thousands. It may hit but I can't find a mark on the cone. And that don't mean it has not hit it but it is tight on the bottom side. Ole well no biggy but I guess it makes for good discussion
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  #21  
Old 03-22-2017, 12:14 PM
Dennis D
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Well all I can say is none of my bolt guns have rebounding firing pins so at rest they all sit against the firing pin stop which puts the pin at it's fully fired position. That's the case for my Falcon, Blackhawk, ULA's, Coopers, Tbolts and CZ and Anschutz. Additionally none of the pins extend past the bolt face so even if there were enough room for the bolt to move forward the pin still won't hit the barrel.
Course all of them are left handed so maybe this is only a problem for you right handed folks.....

I can see where this could be a problem for a cone breach if there is so much play as to allow the bolt to move to far forward though.

Dennis

PS, the reason they extract is that the first part of the bolt rotation retracts the firing pin before the extractor cam is contacted.

Last edited by Dennis D; 03-22-2017 at 12:25 PM.
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  #22  
Old 03-24-2017, 11:39 PM
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I currently have a 2500x sitting at a home-based FFL on the mandatory CA 10-day hold. When it arrived I filled out the initial paperwork and performed the CA firearm safety test (I know, seems silly with this gun). Anyway, the dummy round got stuck in the chamber. It looked like the well-worn plastic end is caught between the conical chamber and the feed ramp. Now that I read this I am sick to my stomach. I know when it arrived, they inspected it and based on their comments I know they pulled the trigger, I just don't know if they had a dummy round in the chamber. They certainly wouldn't admit it at this point. Anyway, I should have it in 2 days and will know what I'm dealing with. For now, it just sits with the dummy round stuck in the chamber.
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  #23  
Old 03-25-2017, 08:17 AM
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Call your gunsmith/Killoughs, wherever you got it, explain the situation and see what they say.

I'd bring a loupe, a flashlight, and one of those , to look at the cone. If I saw a single mark in the firing pin's location or if there is a visible bump inside the chamber, the world would end because you know there wasn't one when it shipped to you, this FFL would have some problems on their hand. I could never imagine dry firing a firearm that wasn't mine or without explicit permission.
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  #24  
Old 03-25-2017, 08:47 AM
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My EX gun store, here in the north end of Phoenix, did the exact same thing when receiving my cone breech rifle. Then they called me to let me know about the wonderful trigger it had.

They would accept no responsibility for their actions and actually blamed me for not telling them not to dry fire the rifle.

On a good note, well as good as can be under the circumstances, you can get a chamber iron from Killoughs. This neat device will smooth out that divot in the breech. You will still see the divot but the rifle will work fine.
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  #25  
Old 03-25-2017, 09:53 AM
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Originally Posted by Doodaddy View Post
Call your gunsmith/Killoughs, wherever you got it, explain the situation and see what they say.

I'd bring a loupe, a flashlight, and one of those , to look at the cone. If I saw a single mark in the firing pin's location or if there is a visible bump inside the chamber, the world would end because you know there wasn't one when it shipped to you, this FFL would have some problems on their hand. I could never imagine dry firing a firearm that wasn't mine or without explicit permission.
Thanks, I may do just that, though to see it I may have to get the dummy round out at their house. I didn't have my glasses but it look like a flattened piece of plastic rim was holding it (plus I used a wooden dowel to try to push it out with no success). They wanted to try to get it out on their own but I told them not to touch it. I'm sure it would have been a simple job at home (famous last words )

Quote:
Originally Posted by Bill40718 View Post
My EX gun store, here in the north end of Phoenix, did the exact same thing when receiving my cone breech rifle. Then they called me to let me know about the wonderful trigger it had.

They would accept no responsibility for their actions and actually blamed me for not telling them not to dry fire the rifle.

On a good note, well as good as can be under the circumstances, you can get a chamber iron from Killoughs. This neat device will smooth out that divot in the breech. You will still see the divot but the rifle will work fine.
Thanks. If I ever buy a complete rimfire in the future I may ask that a message to not dry fire be left in the box or perhaps send it with no firing pin and send that directly to me.

I sometimes wonder about these self-righteous types. In your case, do they really believe it is not their fault or is it simply to deflect responsibility because they know it is their fault?
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  #26  
Old 03-25-2017, 05:07 PM
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Next time Have shipper remove the bolt and put a zip tie through the recover where the bolt goes and a tag saying do not remove only by buyer
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  #27  
Old 03-25-2017, 07:01 PM
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A 2500x action has a MECHANICAL FIRING PIN STOP!!! Now if the head space is correct, You can dry fire the dam thing until you get tired of doing it. With a cone it can be to long and enter the bolt counter bore and ding the chamber. Suhl actions are famous for this not 2500x.
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  #28  
Old 03-25-2017, 08:16 PM
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I guess you need a chamber iron anyway. I seem to always from time to time accidentally bump the trigger while fooling with the bolt,whether cleaning , lubricating or something. I have my repair tool now. I new I didn't like cone breech chambers , even though I never had one until now. I still can not see a spot where the pin has hit mine, but it seems better now that I used the chamber iron. I will no more after a box or so through it
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