Remington 700 30-06 conversion to 375 RUM

GAR700 · December 5, 2018, 05:35 PM

First things first...I think it's possible but am I misinformed?

This is what I have..

1. I have a Remington 700 ADL in 30-06 with a bad barrel I am looking to do something with.

2. I have a 375 RUM takeoff barrel from a Remington 700. Coincidence??? Yes, but what a wonderful coincidence.

3. I have a buddy with a Remington 700 bolt from a 300 RUM that he is looking to get rid of.

Can I make use of these 3 components to build a 375 Ultra Mag?

From what I can tell the answer is yes, as long as I replace the magazine box (and maybe the follower).

thoughts?

Wyosmith · December 5, 2018, 06:20 PM

The bottom of the receivers for the Ultra mags are milled differently then they are for the 30-06 size magazines. You would have to get Ultra Mag magazine and bottom metal.
So to answer your question "can use use what you have?" Yes ----- but only at the expense of a lot of time and labor (which may mean money, if you don't own a mill) and I personally do not think it will be worth the end result. But if you don't mind tinkering with it, you can do it and make it work

GAR700 · December 6, 2018, 10:03 AM

I see...

So I guess I never noticed that they don't make RUMs in the ADL. Thanks for the info. I will see what I can come up with.

std7mag · December 9, 2018, 10:19 AM

So, is a 700 bolt, a 700 bolt?
Savage uses a floating bolt face.
With a Remington bolt swap, would you have a difference in lug engagement?

December 5, 2018, 05:35 PM	#1
GAR700 Senior Member Join Date: September 22, 2008 Location: East of the Crest, Oregon Posts: 184	Remington 700 30-06 conversion to 375 RUM First things first...I think it's possible but am I misinformed? This is what I have.. 1. I have a Remington 700 ADL in 30-06 with a bad barrel I am looking to do something with. 2. I have a 375 RUM takeoff barrel from a Remington 700. Coincidence??? Yes, but what a wonderful coincidence. 3. I have a buddy with a Remington 700 bolt from a 300 RUM that he is looking to get rid of. Can I make use of these 3 components to build a 375 Ultra Mag? From what I can tell the answer is yes, as long as I replace the magazine box (and maybe the follower). thoughts?

December 9, 2018, 10:19 AM	#4
std7mag Senior Member Join Date: June 23, 2013 Location: Central Taxylvania.. Posts: 3,609	So, is a 700 bolt, a 700 bolt? Savage uses a floating bolt face. With a Remington bolt swap, would you have a difference in lug engagement? __________________ When our own government declares itself as "tyrannical", where does that leave us??!! "Januarary 6th insurrection". Funny, I didn't see a single piece of rope...

December 5, 2018, 06:20 PM	#2
Wyosmith Senior Member Join Date: December 29, 2010 Location: Shoshoni Wyoming Posts: 2,713	The bottom of the receivers for the Ultra mags are milled differently then they are for the 30-06 size magazines. You would have to get Ultra Mag magazine and bottom metal. So to answer your question "can use use what you have?" Yes ----- but only at the expense of a lot of time and labor (which may mean money, if you don't own a mill) and I personally do not think it will be worth the end result. But if you don't mind tinkering with it, you can do it and make it work

December 6, 2018, 10:03 AM	#3
GAR700 Senior Member Join Date: September 22, 2008 Location: East of the Crest, Oregon Posts: 184	I see... So I guess I never noticed that they don't make RUMs in the ADL. Thanks for the info. I will see what I can come up with.