Rem 700 action ?

K

kidcoltoutlaw

Guest
Can you build a 338 Rum on a 700 action that is not the extra long action if you remove the bolt each time to insert the round ? I would think you could as long as the bolt is the same size,

Thanks,Keith
 
You could, but the only way you could load it would be through the rear of the action. Even if you weren't concerned about any sort of rapid fire shooting, it'd seem to be a royal pain the caboose to use. It would have to be unloaded the same way if for some reason a loaded round needed to be removed from the chamber. A fired case might not eject through the loading port either.

This seems to me to be one of those things that could be done because you want to, but there's not much practical reason I can see to do it. Sort of like scratching your left ear with your right hand, although the left hand is available to do the job.
 
Keith

If you are concerned about any difference in strength, there is none. The short and long actions share the same identicle pressure holding features........jackie
 
another ?

Is there just short and long or is the ultra mag extra long ?

Thanks,Keith
 
Long and short in the 700 the 338 rum works in the long as a reapeater.
 
338 Lapua

Is it a different action for the 338 Lapua,

Thanks,Keith
 
I believe the 700 in 338 lapua is still the standard long action.
What might have been your confusion is the use of the description 700 long magnum which just means the action is a long with a magnum bolt face.

The rem 700 that is fit for the lapua has a larger bolt face opening to accomidate the larger rim dia. of the Lapua cartrige.
 
kidcoltoutlaw said:
Is there just short and long or is the ultra mag extra long ?
Thanks,Keith
Click to expand...

In the Rem 700 there are only short and long actions. I've converted a 700 BDL 7mm Rem Mag action to 300 RUM. It involved changing the magazine box to the factory ultramag box which has cutouts on the side, of the box, and filing a little metal off of the inside edges of the action's magazine cutout to allow the cartridge to pass though. I doubt the widening is required on actions made since the ultramags were introduced since it has no effect on other cartridges. It's not much metal to remove. The "standard" Rem 700 long action was designed to take 3.6" oal belted magnums like the 300 H&H, 8mmRem, and the 7mm STW. The 300 and 338 RUM are also 3.6" oal spec cartridges though they are cramped if you want to shoot low drag bullets. That's true with the belted magnums too. Factory ultramag ammo will feed from the magazine and eject just fine. No bolt modification is required to go from the standard belted magnums to the RUMs.

I built the 300 Rum as a 1 mile silhouette rifle with a 30" 1-3/8 to 1" straight taper Hart barrel. At 16 lbs recoil is tolerable. It shoots ok, but a similar 7mm STW is a bit more accurate with less wind defelecton, a flatter trajectory, and less recoil. They shoot 210 and 180 grain Berger VLD's respectively.

Wyatts offers two extended magazines which increase the usable cartridge OAL of the 700 acton to 3.82" and 4.00" both require machining the action. I haven't yet done this mod to my 300 RUM but I've purchased the shorter one.
http://www.midwayusa.com/viewproduct/?productnumber=633806
http://www.midwayusa.com/viewproduct/?productnumber=767495
 
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A few years back

Everybody said the 338 Lapua would not work because of the bolt face. What is it .004 more than the 338 Rum ?

Thanks,Keith
 
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Rim Sizes

The 338 Lapua is .586 the 300 RUM is .539 that's .047 that's A LOT. The bolt Dia. is made larger (along with bolt face)specific to the 338 Lap in the Rem action LRP rifle.
 
Sierra

Shows the case head size as .584 on the 338 Ultra and .588 on the Laupa. I'm just going by what they say. I always thought there was a lot of difference. I would think your right. I get 3100 FPS out of my 338 Rum with a 250 Sia SBT I do have a 28.8 inch barrel,

Thanks,Keith
 
Louis Boyd

So how are you doing at one Mile?

I tried 1450 the other day on steel. I could not see hits. So I shot right beside of the steel and then I could see my hits. I don't see how I could go from missing by inches to missing by yards and a lot at that. The steel was orange nobody could see hits on the steel.

My brother kept saying I don't see a bullet strike any where over and over. So I said OK . I'm going to miss but only by a few inches then he said I see it right beside the target,

Thanks,Keith
 
I'd think your source of information needs checking.
A couple of sources show the 338 Ultra to have a body diameter of 0.550 and a rim diameter of .534
For the 338 Lapua those are .587 and .5878.
Thats a difference at the bolt face of .0538. I'm sure it's a lot more than .004". The Weatherby 378s and 460s are in between with a .579 rim though their belt is over 0.6.

I've seen a factory 338 Lapua Rem 700 and it does work with the standard size 700 bolt. It's just that the end of the bolt around the cartridge is rather thin. Lapua brass is strong and at that location and should not be a problem. I should have looked, but I'm pretty sure the factory 338 Lapua Rem 700 uses a Sako style extractor as the ring slye Rem700 extractor would make the bolt head even thinner.
 
Sierra's #5 4th printing lists the 300 RUM rim @.534, base @.551 The 338 Lapua 's rim @ .588, base @ .587. You have the same base/rim sizes on your 338 RUM as the 300 RUM simply measure a NEW case. the difference is about the same as the PPC cases to the BR cases
 
Don't matter to much to me

The Lapua brass twice the price of Rum brass and I get 3100 FPS with a 250 so I'm happy with the 338 Rum. I was just wondering what the difference was,

Thanks,Keith
 
Sierra reloading manual

Is where I got my numbers at. I'm sure it was a typo or I read them wrong. I was looking at the numbers for the case not the bolt on the rifle,

Thanks,Keith
 
Remington In 338 Lapua

I have seen Remington 700's bolts modified to use a 416 Rigby, which shares about the same rim diameter as the big Lapua. There wasn't much left.

But, as long as you can get the extractor to work, it might not be that big of a deal, depending on your perspective. All the nose of the Remington bolt does is contain the extractor, and of course, share part of the "three rings of steel" protection in case of catasrophic failure.

Does Remington offer a chambering in the 700 with a rim larger than the standard Magnum that has been around for years??........jackie
 
Jackie

Jackie Rem offers the 338 Lapua in a tactical rifle (Look under the Modular Sniper Rifle) in the Military section. I had a 30-416 IMP on a Rem action some years ago, never was happy with it. Blown extractor or bulged cases @ the extractor cut out , below what the smith said was his medium loads.
 
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Louis

I wasn't clear in my reply :eek: I last refered to Base dims. not the Rim dims. My Bad . The RUM/LAP has roughley .01 larger difference than the PPC/BR depending on which manuals specs you use.
 
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