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Bushing bolt

4xforfun

4xforfun

Gold $$ Contributor
I have a friend who just got his new build back. 6.5-47L. Built on a Rem 700 SA bought new from PT &G a couple months ago. He just started shoot-clean-shoot break in deal today. He said that the the only two shots fired at 2 full grains under max book left cratered primers...like it was an over PSI load. The primers are not pierced, but show some defenate flow up around the firing pin. Zero other PSI signs...pure powder puff.

My thoughts were unless it gets REALLY bad and he starts blanking primers it shouldn't be a big issue if he keeps tabs of it. Also, my thoughts of a remedy would be to have the bolt bushed. If I remember right it is GreTan that provides this service. Anyone else do it? Do you agree with my assesment...as I AM NOT a gunsmith...(although I did stay at a Holiday Inn last night).

Thanks,
Tod
 
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Wonder why his gunsmith did not suggest bushing the bolt? I would suggest to your friend to go ahead and send it in to have this done now and it will never be an issue again.
 
JBT said:
Wonder why his gunsmith did not suggest bushing the bolt? I would suggest to your friend to go ahead and send it in to have this done now and it will never be an issue again.
Click to expand...

He used my smith and it was discussed...... As a matter of fact we discussed it when he bought the action. I had him ask PT&G if bushing the bolt was part of the "truing" of the action. The funny thing is, PT&G had never heard of having a bolt "bushed" and they didn't seem to know what it involved. They told him that he didn't need it. o_O
Is that even possable??

Tod
 
4xforfun said:
He used my smith and it was discussed...... As a matter of fact we discussed it when he bought the action. I had him ask PT&G if bushing the bolt was part of the "truing" of the action. The funny thing is, PT&G had never heard of having a bolt "bushed" and they didn't seem to know what it involved. They told him that he didn't need it. o_O
Is that even possable??

Tod
Click to expand...
It is possible, depending upon who he talked to at PTG. I haven't had reason to use them in quite a while, but they have had personnel answering the phone at times who have no clue about guns/gunsmithing. I'm not knocking them as everyone has to start somewhere. I just wish those rookies would ask questions when they don't know the answer, instead of trying to BS their way along. Visit most any Gander Mountain and you will likely have the same type of clueless employees. This is probably a combination of low wages and a shortage of knowledgeable candidates to pick from.
 
It's not "just" the employee,management has a responsibility in this(not directed towards PTG)....when working in an environment where decisions can get VERY technical,there needs to be an understanding within that co. that it's;

Not only OK to refer to a "higher up",but it should be encouraged.
 
butchlambert said:
Well, My Cabin Fever SA $380 receiver from PT&G had a one piece bolt and a .062 firing pin.
Click to expand...

I have never seen the action....maybe it has it done already. IOf that is actually the case there might be soething else going on...or, the gun shows PSI early...or there is actually high PSI.

I'll have to get out my magnifying glass (like Sherlock Holmes).
 
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4xforfun said:
I have never seen the action....maybe it has it done already. IOf that is actually the case there might be soething else going on...or, the gun shows PSI early...or there is actually high PSI.

I'll have to get out my magnifying glass (like Suherrlock Holmes)
Click to expand...


Maybe it is the fit of the firing pin to the firing pin hole in the bolt face??
 
I just ordered a rem 700 action from PTG with the PTG bolt in it. You can specify the .062 firing pin and I highly recommend this. For $422 with a PTG bolt with properly sized firing pin this is a deal. Make sure if you order the PTG rem 700 you get the small firing pin.

In this case I would definitely bush the firing pin. I had a 6br that had the same symptoms. Bad cratering which occasionally resulted in hard bolt lift (just the brass in the firing pin hole). I bushed it and the load was just fine for the life of the barrel.

I never build a rifle for my personal use with anything but a (nominally) .062 firing pin.

--Jerry
 
4xforfun said:
I have never seen the action....maybe it has it done already. IOf that is actually the case there might be soething else going on...or, the gun shows PSI early...or there is actually high PSI.

I'll have to get out my magnifying glass (like Sherlock Holmes).
Click to expand...

I have never seen a crater with the .062 firing pin and I've got friends who really like hot loads. PTG allows you to choose firing pin diameter when you order it (anyway they do on the current offer, I just ordered one) but they provide both .062 nominal and .080 nominal firing pins. I would bet big money your friend has the larger firing pin.

--Jerry
 
Alex Wheeler said:
Light springs, light pins, and/or low pin fall can still crater with a .062".
Click to expand...

I guess that can happen. I stay away from light springs especially and don't get excited much about the ultralight pins. The small hole has 66% less force pushing on it and the smaller hole is more rigid (shorter across the unsupported area). Danged hard to crater. --jerry
 
carlsbad said:
I have never seen a crater with the .062 firing pin and I've got friends who really like hot loads. PTG allows you to choose firing pin diameter when you order it (anyway they do on the current offer, I just ordered one) but they provide both .062 nominal and .080 nominal firing pins. I would bet big money your friend has the larger firing pin.

--Jerry
Click to expand...

You have the choice of firing pin size, but do they also change the hole in the bolt face to match?

Tod
 
Certainly. An oversize hole would be unacceptable. PTG bolts are 1st class. --Jerry

edit: I'll expand a little. They call it a .062 firing pin but that is actually the size of the hole. PTG firing pins I've measured are generally .059. I grind mine to .0595 +/- .0005.
 
carlsbad said:
Certainly. An oversize hole would be unacceptable. PTG bolts are 1st class. --Jerry

edit: I'll expand a little. They call it a .062 firing pin but that is actually the size of the hole. PTG firing pins I've measured are generally .059. I grind mine to .0595 +/- .0005.
Click to expand...


Jerry, how do you grind a .059 to .0595?
 
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