308 barrel bored out to 375 ?

[hemiford]

Have a factory Rem 700 in 300 RUM, wondering if there is enough
meat in the barrel to have it bored to 375 (RUM), and still shoot
with accuracy, I guess is what I mean.
Does anyone know if Remington uses the same 26-in barrel blanks
for all their RUM caliber offerings ? Same external contour, that is ?

 

[Lefty7mmstw]

I was going to just say no, but I measured my 7rum, 300rum, and 375h@h lightweight to be sure. No brakes or other bbl. alterations on any of the rifles.

300 rum m700bdl lh
.645" at muzzle (26" factory bbl)

7mm rum m700 lss lh
.657" at muzzle (26" factory bbl)

375 h@h rem lightweight one of 500 sps d.g.
.660" at muzzle (24" factory bbl)

You'd be tight for sure... my 375 is a sub moa rifle with 270 speer bt's and 300 barnes tsx so even in a trim profile 37 cal will still turn in accuracy.

 

[hemiford]

Thank you very much, kind sir! That is invaluable info !
I owe you a beer.
Now I need to search back for that thread about barrel makers
who do re-bores.

 

[Lefty7mmstw]

Thank you very much, kind sir! That is invaluable info !
I owe you a beer.
Now I need to search back for that thread about barrel makers
who do re-bores.

I've never used these guys...... but I got the link off a thread here and they weren't complaining.... Classic Barrel Works....

thought the concept interesting enough to save the link...

 

[adam32]

For the price, just buy a new barrel...

 

[Lefty7mmstw]

For the price, just buy a new barrel...

I concur in this case.

There isn't much bbl. left for a re-bore to work well here. Probably better to talk to er shaw or similar if you want an economy barrel. If you can spring for more, by all means do, but keep your uses in mind here. If you are only shooting your 375 to a couple of hundred paces as most are, anything holding moa will do, and cheap factory pipes do that in this cal.. If you are looking to stretch her out, then hang the best barrel you can find.

I'm not saying it couldn't be done, but it may not be your best option.

 

[hemiford]

Yes, if a barrelmaker had a factory replacement 26" 375 RUM in stock,
that might be a better choice, depending on wait time, dollars, etc.
More internet homework and phone calls.
Any number of barrelmakers do custom work, are there any that tend
to stock replacement barrels ?

 

[Kennibear]

hemiford

You are so close in price to an economical replacement barrel why not get one and add a few inches of length to boost the FPS? Even if it adds a pound of weight the recoil of a 375 RUM will make you appreciate that pound.

Sell the take off and get back some of your money to help pay for the new tube.

KB

 

[shortgrass]

Most modern made factory barrels do not make good candidates for re-boring and re-rifling.

 

[MontanaRifleman]

IMO, you are taking a big gamble by trying to bore out a sporter barrel to 375 cal. and hoping for an accurate shooter. I think your odds of getting something that will shoot sub MOA is less than 50/50. It might work... but it is definitely a gamble.

Also, you will increase your chance for good accuracy if you go with a 24" vs a 26" barrel, especially in 375 and you will loose very little performance with the shorter barrel.

If you go on Midway, you can get a Green Barrel for $92 plus shipping or a Shilen from $175 to $250 plus shipping. I think this is a lot better way to go.

 

[hemiford]

Well, of course I can't dispute all the good points brought up.

On one hand, I didn't want another big project and was investigating
a cheap and easy solution, I know that when you go too cheap you usually
get just what you pay for.

On the other hand, I could get a custom barrel, thicker longer harder etc,
rework the barrel channel or get a new stock, turn my Mustang into a GT-40.

All honorable directions to take.