action boltway

[110fp]

Does anyone know what the id of the action is where the bolt runs?

I am coming up with anything from .705 to .7085. I only have a
caliper and I cant get a measurement on the rear of the long action

trying to get bushings from PTG

[J.Baker]

Bushings for what? To serve what purpose?

[Robinhood]

To use his PTG Savage truing tools. A little different concept for truing the action. It puts everything in line with the bolt raceway. Everything is cut to be concentric, parallel and perpendicular.

The bore of the bushing is .5005 and the OD needs to be custom for your action.



To the OP you need some Telescoping Gauges, a 0-1" mic and some skill. I think tapered OD bushings are a good idea.

[110fp]

To use his PTG Savage truing tools. A little different concept for truing the action. It puts everything in line with the bolt raceway. Everything is cut to be concentric, parallel and perpendicular.

The bore of the bushing is .5005 and the OD needs to be custom for your action.



To the OP you need some Telescoping Gauges, a 0-1" mic and some skill. I think tapered OD bushings are a good idea.

The problem with the tapered bushings is that they can roll on you slightly then it all for not.
I am going to buy a bore dial indicator, its one of those tools that will last forever and you use once every 2 years

Thanks

[110fp]

To use his PTG Savage truing tools. A little different concept for truing the action. It puts everything in line with the bolt raceway. Everything is cut to be concentric, parallel and perpendicular.

The bore of the bushing is .5005 and the OD needs to be custom for your action.



To the OP you need some Telescoping Gauges, a 0-1" mic and some skill. I think tapered OD bushings are a good idea.

Have you used there products?

[sharpshooter]

The idea may be sound, but it not only doing it backwards, it's unnecessary.

[J.Baker]

The idea may be sound, but it not only doing it backwards, it's unnecessary.

That's kinda what I was thinking to. Apparently Kiff still thinks Savage's are Remingtons.

[Toftwo]

Funny because I had the same question for the PTG folks at SHOT. I wanted to know what the average raceway diameter was because in order to order a bolt body from them you have to specify what size you want. They have their drop in gauges, but if you have no idea what size to start with you might have to buy 5 gauges to get the correct one. Earl recommended telescoping gauges like Robinhood suggested.

[Robinhood]

The problem with the tapered bushings is that they can roll on you slightly then it all for not.
I am going to buy a bore dial indicator, its one of those tools that will last forever and you use once every 2 years

The shank of the tool is the pilot. A taper bushing cannot tilt if the bore is the correct size. Well maybe .0002 in 5 inches, even if that is conservative it is not far from reality and would be fully acceptable.

If you can find a used Sunnen with a .0001 graduation dial in the size you want grab it. For that matter get the highest resolution dial in any bore gauge you chose. The Starret system is a PITA

If I was in the business It would be a sound purchase. I am not. There are some who believe the floating bolt head is the answer to all of Savages manufacturing tolerance woe's in accuracy dept. If that were the case you would see nothing but Savages or copies in many of the bolt rifle competitions. This is not the case. The truth is that if you can bring all of the components into the same axis and mating surfaces in perpendicularity you have upped your game. Combine that with bolt work done by SSS and you have a very competitive rifle that can and does kick green in the knee. The Savage is a great entry level rifle right out of the box with few peers in the accuracy dept. After that there is a lot to improve on.