Re: savage barrel swich to marlin XL7 & XS7
Quote:
Originally Posted by sharpshooter
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.
Re: savage barrel swich to marlin XL7 & XS7
I have a fantastic idea. Why not use Savage parts with Savage rifles and Marlin parts with Marlin rifles? ;)
Re: savage barrel swich to marlin XL7 & XS7
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.
Re: savage barrel swich to marlin XL7 & XS7
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.
Re: savage barrel swich to marlin XL7 & XS7
Quote:
Originally Posted by 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.
The are, there is a wed site for them also. http://www.marlinowners.com/
Re: savage barrel swich to marlin XL7 & XS7
Quote:
Originally Posted by Savage_Jake
I have a fantastic idea. Why not use Savage parts with Savage rifles and Marlin parts with Marlin rifles? ;)
Because I want to use aftermarket parts. Douglass, brux, Bell & Carlson, Rifle basix, Burris ...Savage has not made a scope in years!
I don't own one , but I can afford to pay attention ( Barley :) )
Ya, I know what you meant. But with a little Afro mouse engineering we will survive! http://img.photobucket.com/albums/v6...animaniacs.gif
Re: savage barrel swich to marlin XL7 & XS7
JS223,
I believe the same as you. What we are seeing is merely tolerance differences in production.
There are a couple of us who have switched barrels between Marlin and Savage, without any bolt mods needed for correct headspace.
Dangerous Dan has pics of his posted on the marlin site. Another gent has begun tackling the stock issue. Essentially you get a Model 70 stock and do some bedding, you can even change to a hinged floor plate.
Re: savage barrel swich to marlin XL7 & XS7
kinda difficult to compare a 223 to a 243.
Re: savage barrel swich to marlin XL7 & XS7
Quote:
Originally Posted by helotaxi
Quote:
Originally Posted by sharpshooter
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.
The depths of the bolt heads are the same for all calibers on a Savage rifle. I don't know for a fact if it's true for a Marlin, but I'd say so just for production reasons.
Re: savage barrel swich to marlin XL7 & XS7
Quote:
Originally Posted by darkker
JS223,
I believe the same as you. What we are seeing is merely tolerance differences in production.
I want to clarify that when I'm talking production tolerances, I mean Savage .473 size compared to .378 size. What I was saying is, the .473 and .378 bolt heads from Savage have basically the same depth of bolt face as each other. My info was to clear up the misconception that the .378 size Savage measurement was an invalid comparison. As you can see by my measurements, it's quite valid. I was only talking about the Savage parts, not Marlin ones.
Re: savage barrel swich to marlin XL7 & XS7
Quote:
Originally Posted by sharpshooter
If the depth of the bolt head on the Marlin is .140", that means the chamber is shorter than on a Savage barrel.
So that would mean you can't properly headspace a Savage barrel on a Marlin unless you lathe some material off the chamber face. The Marlin bolt hood would hit the Savage barrel before it headspaced properly. The Savage can utilize more chamber ramp for better feeding.
Big thanks to Bruce, nice pics. The measurement of .140" depth, is that within .001" or .010" ?
The Savage depth is approx .115" There is a slight dish shape from tumbling and I find the ones that measure deeper often have more dish, hence the deeper measurement. Say .115" - .117" normally.
Re: savage barrel swich to marlin XL7 & XS7
First, an apology. A corrected photo has been posted.
Using a Starrett depth micrometer, I got new measurements.
To the nearest 0.001, my two Marlins are 0.130 deep. My Savage is 0.115 deep.
I need to retire my old dial caliper. When the depth micrometer is set at 0.130, the caliper measures it at 0.140.
Bruce
Re: savage barrel swich to marlin XL7 & XS7
Safety on these barrel swaps is easy to check.
Before interchanging barrels, people need to measure cartridge protrusion from the chamber. That measurement must be greater than the bolt face depth.
Bruce
Re: savage barrel swich to marlin XL7 & XS7
Are the extractors interchangeable? If so, it looks like the Marlin might be a little better. The claw is a little more curved.
Re: savage barrel swich to marlin XL7 & XS7
Anything on the extractors?