338 rum

[wmattson]

Hey guys, cant seem to answer my question anywhere I've searched so I'll try here, can I re barrel to 338 rum using a Remington 700 magnum long action? If not what will need to be changed?
Thanks in advance

 

[bobnug]

Yes but you will need to open the action magazine opening or shoot single shot.

 

[remington jim]

Its a Bunch of Mod $$ work better off to find a M700 RUM action ! RJ

 

[c-fbmi]

Your question made me curious............so I went down to my vault, where I have several factory RUMs and many factory standard belted magnums in 700 Rems. There is only a very slight difference at the back of the feed lips. A standard belted action would have to be opened up just slightly and make the triangular openings in the mag box to accommodate the fatter case for 3 under. The action feeds the RUM case perfectly as it is, you just can't pop the case down through the feed lips at the back to load the magazine. All in all I would say it would take me about 1/2 hr to maybe an hour, to make the standard belted mag action function perfectly with a RUM case.

 

[wmattson]

Its a Bunch of Mod $$ work better off to find a M700 RUM action ! RJ

but then i gotta get my new action slabbed, we'll see i may just go with a 300win and save the hassle

 

[wmattson]

Your question made me curious............so I went down to my vault, where I have several factory RUMs and many factory standard belted magnums in 700 Rems. There is only a very slight difference at the back of the feed lips. A standard belted action would have to be opened up just slightly and make the triangular openings in the mag box to accommodate the fatter case for 3 under. The action feeds the RUM case perfectly as it is, you just can't pop the case down through the feed lips at the back to load the magazine. All in all I would say it would take me about 1/2 hr to maybe an hour, to make the standard belted mag action function perfectly with a RUM case.

good to know, thank you!

 

[rifleman338]

The walls on the magazine box will need to have slots cut out on them also.

 

[c-fbmi]

The walls on the magazine box will need to have slots cut out on them also.

That was addressed in my first post, if you read it all. "make the triangular openings in the mag box to accommodate the fatter case"

 

[rifleman338]

My Bad, I guess I blew right past that. Still a pile of work and a chance of having issues. Like was mentioned earlier, maybe keep an eye out in the EE for a donor already set up for the RUM's.

 

[Dogleg]

Widen out feed rails a bit and put a RUM mag box.

A ton of .338 Edges got made out on Magnum
Remington actions around here.

 

[wmattson]

Widen out feed rails a bit and put a RUM mag box.

A ton of .338 Edges got made out on Magnum
Remington actions around here.

So what you're telling me is that I can get a 338 edge built!? I thought I needed a fancy extra long action for that!

 

[Slimbo]

double tap

 

[Slimbo]

My Bad, I guess I blew right past that. Still a pile of work and a chance of having issues. Like was mentioned earlier, maybe keep an eye out in the EE for a donor already set up for the RUM's.

A half an hour doesn't sound like a pile of work

 

[Dogleg]

So what you're telling me is that I can get a 338 edge built!? I thought I needed a fancy extra long action for that!

Sure. Shawn Carlock's rifles were made on Remington's for years. As you likely know, Shawn owns Defensive Edge and that's where the "Edge" in .338 Edge comes from. A Wyatt box goes a long ways to keeping it a repeater with the longest bullets and that can save you cutting the RUM slots.

 

[remington jim]

Widen out feed rails a bit and put a RUM mag box.

A ton of .338 Edges got made out on Magnum
Remington actions around here.

Hmm maybe its a LOT easier -faster then i suspected it to be - i should have checked into first - me Bad ! RJ

 

[Dogleg]

You could even do it with a flat file in a few minutes if you wanted to. If your file somehow managed to go full-auto on you and you were left standing in a pile of excess shavings, there's still the center feed Wyatt box as a plan B.

 

[BigUglyMan]

You could even do it with a flat file in a few minutes if you wanted to. If your file somehow managed to go full-auto on you and you were left standing in a pile of excess shavings, there's still the center feed Wyatt box as a plan B.

I did exactly that when I opened my M70 up to feed 3.8" rounds. A few minutes of careful fining at the rear of the opening and voila.

 

[Slimbo]

While we are on the topic, is this a viable solution to seat bullets longer in a Remington m7 350 Rem?