Bolt PT&G and GRE TAN

[maurofelipe]

Hey guys, does anyone know what lathe work needs to be done on a Remington PT&G bolt to install a GRE-TAN firing pin? I'm from Argentina, so I can't send it to Greg.

 

[WSnyder]

Hey guys, does anyone know what lathe work needs to be done on a Remington PT&G bolt to install a GRE-TAN firing pin? I'm from Argentina, so I can't send it to Greg.

No machining should be required unless you bought the PTG BR bolt body. What specific bolt body did you buy?

 

[maurofelipe]

Cuando enrosco el percutor en el pasador original, entra hasta el fondo, se atasca en el cerrojo PTG, pero antes de llegar allí, la parte delantera de la rosca del percutor es más gruesa que la original.

 

[Albany Mountain]

That explains it all.

 

[WSnyder]

Cuando enrosco el percutor en el pasador original, entra hasta el fondo, se atasca en el cerrojo PTG, pero antes de llegar allí, la parte delantera de la rosca del percutor es más gruesa que la original.

Translation: When I screw the firing pin into the stock pin, it goes all the way in, jams into the PTG bolt, but before it gets there, the front of the firing pin threads are thicker than the stock.


It sounds like you may have a BR bolt body and the front of the pin is binding at the front of the bolt.

 

[maurofelipe]

Necesito desmontarlo y probarlo sin la aguja, pero creo que necesito recortar la punta de la cubierta, que es más ancha que la original. Pero primero, me gustaría asegurarme, si a alguien en este foro le ha pasado esto, de dónde la recortaron con el torno.

 

[maurofelipe]

I need to take it apart and try it without the needle, but I think I need to trim the tip of the shroud, which is wider than the original. But first, I'd like to make sure, if this has happened to anyone on this forum, where they trimmed it with the lathe.

 

[WSnyder]

if this has happened to anyone on this forum, where they trimmed it with the lathe.

No, I have never had an issue with a bolt shroud (Gre-Tan included) not fitting a PTG bolt. You need to remove the firing pin and spring from the shroud and test fit the shroud and firing pin separately to see where the problem lies. I doubt the shrouds nose and or threads are to blame. I have had and have seen the BR bolt and std firing pin interference multiple times.

 

[maurofelipe]

 

[Edd]

I need to take it apart and try it without the needle, but I think I need to trim the tip of the shroud, which is wider than the original. But first, I'd like to make sure, if this has happened to anyone on this forum, where they trimmed it with the lathe.

You should machine the bolt bore to fit the GreTan shroud.

The shrouds are made oversized just for this purpose. The PTG bolt bore probably isn't concentric and the GreTan shroud will be so you should machine the bolt bore to fit the shroud.

The bolt bore will not be perfectly concentric after machining because you will not have to remove enough metal to make it concentric for the shroud to fit.

You may also have to bush the front of the bolt.

 

[maurofelipe]

Tendría que medir la rosca de la funda y tornearla para ensancharla hasta la parte más ligera. ¿Eso sería todo?

Debes mecanizar el orificio del perno para que se ajuste a la cubierta GreTan.

Los obenques se fabrican sobredimensionados precisamente para este propósito. El orificio del cerrojo PTG probablemente no sea concéntrico, y el obenque GreTan sí lo será, por lo que deberá mecanizar el orificio del cerrojo para que encaje en el obenque.

El orificio del perno no quedará perfectamente concéntrico después del mecanizado porque no tendrás que quitar suficiente metal para hacerlo concéntrico para que encaje la cubierta.

Es posible que también tengas que encasquillar la parte delantera del perno.

You should machine the bolt bore to fit the GreTan shroud.

The shrouds are made oversized just for this purpose. The PTG bolt bore probably isn't concentric and the GreTan shroud will be so you should machine the bolt bore to fit the shroud.

The bolt bore will not be perfectly concentric after machining because you will not have to remove enough metal to make it concentric for the shroud to fit.

You may also have to bush the front of the bolt.

I would have to measure the shround thread and machine it on a lathe to widen the shround to the lightest part? That would be it?

 

[Edd]

Tendría que medir la rosca de la funda y tornearla para ensancharla hasta la parte más ligera. ¿Eso sería todo?



I would have to measure the shround thread and machine it on a lathe to widen the shround to the lightest part? That would be it?

The threads on the shroud and bolt should be fine. It is the counterbore behind the threads in the bolt that needs to be machined so the shroud will fit.