savage barrel swich to marlin XL7 & XS7

[okie2]

HAVE ANY OF YOU FOUND THIS TO BE TRUE
This copied from www.24hourcampfire.com

The diameter and thread specs are the same for the Savage 110 series barrels and the Marlin XL/XS-7 barrels. The potential problem is that the Marlin XL/XS-7 bolt face is recessed more than the Savage 110 series, so it is POSSIBLE for the front of the Marlin bolt to come into contact with the rear of a Savage/Stevens barrel before proper headspace has been achieve. This would create excess/long headspace and the case WOULD stretch and COULD seperate when fired. To be SURE of getting proper headspace, I have cut 0.1" off the rear of the A&B barrel in 257 Roberts that I installed on a Marlin XS-7 action. I had to recut the chamber, since cutting 0.1" off the rear of the barrel created a "short chamber" situation. While you might not need to go to this extra effort, I think that it is a good idea to do so, to insure that this is a safe barrel installation. As with many things, some people are going to say that the barrels are 100% interchangable without any modifications, but that has not been my experience because of the the differences in the recess of the bolt faces.

[1Shot]

...No reason to cut the bbl. any...It's the bolt head that needs the work on... :-[

[Blue Avenger]

...No reason to cut the bbl. any...It's the bolt head that needs the work on... :-[
but if you do that then how can you put a savage barrel back with that bolt head?

[1Shot]

... The potential problem is that the Marlin XL/XS-7 bolt face is recessed more than the Savage 110 series,



...Now ask me that question again..Blue Av... ::)...Now how is cutting the bbl. going to change that dimension... ???

[pdog06]

I am thinking the same thing. The bolthead is the problem, not the barrel. It says he cut the barrel, which made it a short chamber, so he had to redo the chamber. Now wouldnt he end up with what he originally started with? Doesnt the chamber have to be cut with a specific amount of case head protrusion? So it cant really be changed, can it? Or am I just missing something here?

Seems like maybe truing the boltface mighta been a better option, if it would allow for the clearance.

[redie fredie]

I did this swap and never had an issue.
more info on these @ MarlinOwners.Com/forum

[Blue Avenger]

savage has a working system with there barrel and bolt relation right?

so why would it be the savage bolt that is wrong for the action when you introduce a barrel not intended to be used on the savage action?

why can it not be that marlins barrel (or maybe just that one even) is not a perfect match for a savage action?
( not saying you can't, just was not built with that in mind)

can you say that the chamber was cut right to start with? not a factory error?

what is the spec depth of a marlin bolt head?

[darkker]

Ok, I have both types.
The Bolt face on my XL-7 IS NOT recessed more than my Savages. YES the barrels are the same Thread spec. YES the Savage nut wrench fits both, YES the nuts are the same. As for why the author is such a boob, I don't know... Were the purported recession of bolt face an issue, he would have merely had to install the Savage bolt head; they are both floating. They come apart the same way.

[fatdaddy]

Darkker, Is the savage head to marlin bolt a swap that can happen with no machine work? A friend just bought a marlin and would like to try a few of my savage barrels. Thanks, Bill

[Blue Avenger]

Darkker, Is the savage head to marlin bolt a swap that can happen with no machine work? A friend just bought a marlin and would like to try a few of my savage barrels. Thanks, Bill
Cool, you guys can tear your guns apart and check swapping parts for us! :)

[sinman]

wow that does not make sense what that guy was doing.

[Blue Avenger]

wow that does not make sense what that guy was doing.


ya, that is where they lost me too.

[bcp]

http://home.comcast.net/~bcpryor/temp/MarlinSavageBoltHeads.jpg

http://home.comcast.net/~bcpryor/temp/MarlinSavageBoltFaces.jpg

Can someone measure your "0.473" bolt face depths? I only have the LA 223 in the photo.

Also, exactly what is the difference between long and short action bolt heads? Side-by-side photos?

Thanks,

Bruce

[sharpshooter]

If the depth of the bolt head on the Marlin is .140", that means the chamber is shorter than on a Savage barrel.

[Blue Avenger]

Nice presentation! Thank you!

[helotaxi]

If the depth of the bolt head on the Marlin is .140", that means the chamber is shorter than on a Savage barrel.


Except that he's comparing .378 and .473 bolt heads. The rim thickness is different and extractor groove is of a different depth between the .308 and .223 family of cartridges. That "comparison" demonstrates nothing.

[Savage_Jake]

I have a fantastic idea. Why not use Savage parts with Savage rifles and Marlin parts with Marlin rifles? ;)

[efm77]

If you wanted to switch barrels on a Marlin you could just have a custom barrel made for it. That way the chamber would be cut correctly. I feel like it will probably catch on with Marlin like it has with Savage since the barrels are installed the same way. Anyone set up to make Savage barrels could just as easily make Marlin barrels since the shanks and threads are the same. If the bolt face is a different depth they would just have to cut the chamber to the correct depth.

[js223]

Here's a comparison of Savage Short Action .473 and .378 bolt heads, actual measurements not rounded off.

Checking a .473 size Savage bolt head, I'm coming up with .112" depth for the bolt face, .435" for lug thickness front to rear, .998" length for the stub that goes into the bolt head measured from the rear lug surface, and .461" diameter for the stub.
Now the other one, .115" depth for the bolt face on a .378 size bolt head. Lug thickness .436~.437", .995" stub length, and .462" stub diameter.
I think what we're seeing here is production tolerances, plus I'm just using a dial caliper for these measurements, but they're pretty close.

[Blue Avenger]

If you wanted to switch barrels on a Marlin you could just have a custom barrel made for it. That way the chamber would be cut correctly. I feel like it will probably catch on with Marlin like it has with Savage since the barrels are installed the same way. Anyone set up to make Savage barrels could just as easily make Marlin barrels since the shanks and threads are the same. If the bolt face is a different depth they would just have to cut the chamber to the correct depth.
The are, there is a wed site for them also. http://www.marlinowners.com/