Pa machine plugs(important read)

[dave d.]

:)guys anyone with a early version plug with a pressed in bushing from the powder end please contact pete. There wasn't that many made this way but in light to hearing one of the bushings blew out there will be no chances taken.Call pete at 610-923-9234 to talk to pete and get it taken care of. Thanks

[Deleted]

Dave, I was just talking to one of my buddys tonight about the plugs, we bought three total and one friend was the unfortunate one with a blowout. I will try to remember to call Pete tomorrow....Bill

[edge]

Is the bushing flush or is it recessed and you could peen the lip to prevent it from coming loose?

edge.

[rossman40]

Your dealing with 40,000 psi on the bushing from the chamber side. Even though the actual amount of pressure is lower due to the amount of surface area, the carbide could punch its way thru a few peens. Be on the safe side and get a new plug.

[edge]

From the Chamber side are the operative words!

My initial bushing plug was only pressed into the carbon crud and lasted thru MANY hundreds of Lil'Gun loads.

I strongly suspect that the attempted press was too great.
On that diameter the press should only be about 0.001
If one attempts to press much more than that they risk shearing metal and or exceeding the elastic limit of the metal.
Either of those can mean a near zero press fit.

edge.

dougva.proboards.com/index.cgi?board=Savage&action=display&thread=633

[edge]

Now, as a belts AND suspenders guy I absolutely prefer a worn VL between the bushing and bore to prevent too much pressure from either side of the bushing.

edge.

[dave d.]

:)bill glad to hear your buddy is going to call. I want to see this thing nipped in the butt before someone gets seriously hurt.

[lwh723]

Hey, I called Pete today. He said the plugged that failed was one pressed in from the primer side, not the powder side. This makes much more sense to me as I couldn't quite figure out in my mind how a bushing pressed in from the muzzle side could blow out the bolt.

[edge]

Are you saying that it came out along with the primer and fell out when the bolt was cycled?

Do I have this right?

edge.

[Dave W]

Aug 11, 2010 12:53:26 GMT -5 edge said:

Are you saying that it came out along with the primer and fell out when the bolt was cycled?

Do I have this right?

edge.

Edge, the incident is described in the latter portion of this thread.
dougsmessageboards.proboards.com/index.cgi?action=display&board=smokeless&thread=5347&page=1

[Deleted]

I talked to Pete about it and he is going to replace the plugs. the plug in question lost the bushing which hit the bolt with such force it opened and cut his nose. I am not going to make more of this than what it is but if anyone has a primer side bushing please call pete and get it replaced. If you dont know if its pressed from the primer side you can tell by looking under a light. you can see the bushing clearly from the primer side.

By the way this is in no way a reflection on Pete or his work, he is a really nice guy and I wouldnt hesitate to buy another plug from him. the fact that he is willing to make it right says something about his character, He does excellent work. He informed me he will no longer be using bushings in his plugs, they will all be using vents from no on. Pete plans on doing another run of plugs as soon as he has time.

We speculate that the bushing cracked and then came out as it is split down the center across the vent hole but there is no way to tell....Bill

[bigmoose]

dave d,

I have one , the bushing is flush with the muzzle end its marked 1/32, I have not use it. Is it one that needs to be sent back to Pete

[dave d.]

:)marty just contact pete because I'm confused now( which isn't hard to do ;D).

[bigmoose]

Dave,

I spoke to Pete this morning he is a very pleasant gent, he feels my plug is fine.
I tried to send you a PM, but the computer says. no such gent as dave d.

[dave d.]

:)marty i guess i dont exsist ;D.glad you spoke with pete.

[zakjak221]

Dave,

I talked to Pete today as well and he told me that he thought my plug was OK as well. Said he would replace it if I was concerned but I'm gonna keep it. I don't duplex or shoot the hottest loads in town so I feel comfortable with it.
Thanks for the heads up!

Mark

[Deleted]

when Pete builds some new hex vent plugs dont hesitate to buy one, he does beautiful work....Bill

[onecardchuck]

I agree with hillbill.

I had one of these plugs with the bushing and it was top quality and never gave me a lick of trouble, and if I can get my wife back to work I would gladly buy some hex head, SS, ventliner plugs from Pete. He is a stand up guy who stands behind his top quality work.

[boarhog]

Guys. I had a nice conversation with Pete about this claimed problem. The whole thing doesn't make any sense to me. The person that claimed to have a problem has never sent the bad plug or pictures of a damaged rifle to Pete. He told Pete that the bolt flew back and hit the side of his face! There is no way that could happen without shearing off the bolt handle. I also think that there is no possible way the pressure on such a small diameter bushing could build enough psi to blow the bolt back without bulging, if not splitting the barrel. Furthermore, if a double load only bulged my barrel, it stands to reason that it would take more than a double load under a solid bore blockage( dirt dauber nest) to build enough pressure to do what was claimed. So, until some reliable proof is presented to back up the guy's claim, I won't believe it really happened.
Robert/Boarhog