The gunsmith.Who called it a shear pin?
I look forward to the update mate.The gunsmith.
The original one was in bits, we only found a shard of it. The thing I saw - which I now know is called a roll pin - was when he was looking through his box to find a replacement for what he said was the shear pin which had failed. He tried a few (roll pins) but one was just too big and the next size down just too small. He said his were all imperial and he thought what I needed was a metric sized pin. I guess he may have just been trying to gauge the size, or maybe considered using a roll pin to replace the shear pin (would that work??). I honestly don’t know. Either way the bolt will be with Alan Rhone tomorrow and back with me Thursday hopefully, all in working order and ready to go to work.
Thanks. I’ll report back here when I’ve heard what Alan has said about possible cause etc.I look forward to the update mate.
Hope it gets sorted soon![]()
Yep common , think of solder as a glue . easy avoided dont buy rifles made that wayHmmm.
Might be a safety catch issue or could be a dirty chamber or even contaminated cartridge - not familiar with rifle i.e. straight pull or turnbolt, a gentle tap or two with piece of wood might work - make sure the bolt is lifted before tapping rearwards!!
Used to happen with Mosin Nagants when the dreaded cosmoline had not been fully cleaned and it “welded“ the fired brass to the chamber - anything from a heel to a plank got the desired result but then it was a Mosin - dependent on construction on some other rifles the (soldered?) bolt handle snapped off so be careful!
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How interesting - every day……There are two short roll pins that head towards the center of the bolt. It can't be a single pin because it would hit the firing pin. One roll pin holds the ejector in place and the other I believe holds the extractor in place.
In my opinion there are two ways that the ejector roll pin could fail in the fashion that @Woodsy mentioned.
First is an over pressure cartridge that has forced the ejector violently down against the roll pin fracturing it in the process. This would explain the ejector swipe Woodsy wrote of.
Second is if the roll pin somehow moved towards the center of the bolt and partially blocked the firing pin hole. On firing the firing pin could possibly shatter the roll pin.
All purely speculation on my part.View attachment 338351
Alan is an absolute gent and lovely to talk with. A real font of knowledge and always wanting to be as helpful as poss.Thanks. I’ll report back here when I’ve heard what Alan has said about possible cause etc.
Ay Ken.Smellydog,
I‘ve seen plenty of over pressure signs….Flattened primers, pierced primers, primers blown out and little brass washer shapes blown back through the firing pin hole and into the bolt. But never any damage to man or machine, they’re built to take a bit of “Overpressure” aren’t they?
Nearest to damage I saw was when Gunsmith chambered my 14/221 and on test firing, the case welded itself to the bolt face. That was a new Rem 700 action.
Ken.
I have spent quite a bit of my life involved in mountaineering, paragliding and on the fringes of aviation. My brother in law was a senior flying instructor in military and has been involved in fatal accident enquiries. In both areas there is a culture that accidents and incidents should be acknowledged, examined, debated and findings made known so as to prevent further incidents.Bad design in my humble opinion.
I keep reading about all these over pressure scenarios but I never;
Really see any evidence of it.
Never see any injury to firearm or individual.
Or read of it on American forums.
Why is it such a popular assumption?
Pretty much every time it's suggested it turns out to not the case at all.
Just how many here have lost body parts due to this wonderful and colourful expression " overpressure"?
Most Serious ranges have a big mallet to open actions seized via over pressure . Sometimes the method makes an expensive scope worth nothing !Smellydog,
I‘ve seen plenty of over pressure signs….Flattened primers, pierced primers, primers blown out and little brass washer shapes blown back through the firing pin hole and into the bolt. But never any damage to man or machine, they’re built to take a bit of “Overpressure” aren’t they?
Nearest to damage I saw was when Gunsmith chambered my 14/221 and on test firing, the case welded itself to the bolt face. That was a new Rem 700 action.
Ken.
Heym SR20,I have spent quite a bit of my life involved in mountaineering, paragliding and on the fringes of aviation. My brother in law was a senior flying instructor in military and has been involved in fatal accident enquiries. In both areas there is a culture that accidents and incidents should be acknowledged, examined, debated and findings made known so as to prevent further incidents.
When there is culture of secrecy etc that is what leads to disaster. The 737 Max is an absolute example of this. Boeing refused to acknowledge there were any potential issues long before aeroplanes started falling out of the sky.
With firearms and rifle sports there is similar culture of absolute secrecy. Nobody wants to acknowledge that Firearms, ammunition and shooters are bits of machinery and human operators and they all can do go wrong on occasion.
I know of two incidences within target shooting in Scotland where rifles have let go. In one, another on the firing point nearly lost an eye. Cause in both seems to have been not cleaning out the powder thrower properly - the shooter in both cases reloaded pistol and full bore rifle cartridges and on investigation of other cartridges in the same batch there was a mix of pistol and rifle powder.
Quite why incidents such as these are not published or discussed widely I do not know. The BHPA (the paragliding equivalent to NRA or BASC) publishes a summary of incidents each month and a full accident reports on its website.
I don’t see the NRA, BASC or other governing bodies doing anything similar, nor indeed having any willingness to do anything similar.
Possibly an undersized Roll Pin; it should have been an interference fit.what had caused the pin to fail he said that due to the fact the pin was missing he couldn’t see if it was loose