Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Hunting > Long Range Hunting & Shooting

Long Range Hunting & Shooting Nightforce Optics


Reply

question about 700 ultra mag actions

 
LinkBack Thread Tools Display Modes
  #1  
Old 02-26-2003, 09:02 AM
Bronze Member
 
Join Date: Dec 2002
Location: Canada
Posts: 35
question about 700 ultra mag actions

hey guys i have a quick question. are all the ultra mag actions (7 rum 300 rum and 338 rum) the same dimensions? are the mags that come with the 300 rum and the 338 rum the same size (will they both allow the same max oal for a loaded cartridge?).
reason i'm asking is because i intend on purchasing a 338 rum first, using it and when i have more money i would like to put a long tube on it and a mcmillan stock. when i do put a new tube on though i might as well go with the 338/300 rum imp version rather then a standard 338 imp version. will i have any problems doing this on a 338 action?

later
Reply With Quote
  #2  
Old 02-26-2003, 01:40 PM
Writers Guild
 
Join Date: Jul 2001
Posts: 1,459
Re: question about 700 ultra mag actions

The factory actions for these 3 cartridges are the same dimensionally. The only problem with your goals is that if you want to use heavy and long bullets, the mag will not allow for seating these bullets out.

You are forced to stay within the factory max cartridge lengths which is too short for the 300gr MK or similar LR bullets. In this situation, single feed is the only alternative.

Jerry
Reply With Quote
  #3  
Old 02-26-2003, 02:34 PM
Platinum Member
 
Join Date: Jun 2001
Location: Palmer, Alaska
Posts: 2,539
Re: question about 700 ultra mag actions

Brownells has a mag box you can fit yourself with very little modification to the rear of the action. It comes with instructions on what to file off, where, and how much. The length on it is 3.91" I believe. My Ultras box is about 3.675".

You will not have any problem doing what you want with the 700. This is where the 338 Lapua case has an advantage, it makes up for some of the case capacity that the long bullets seated deep eat up, as it is larger in diameter and a bit shorter.

OAL on the 338 Lapua Imp is usually around 3.9" with the 300gr SMK. On the other hand, my brother seats his out to 4.1" on his 700 338/378wby and has to single feed them.

[ 02-26-2003: Message edited by: Brent ]
__________________
Brent Moffitt
Reply With Quote
  #4  
Old 02-26-2003, 08:34 PM
dwm dwm is offline
Gold Member
 
Join Date: Feb 2003
Location: Texas
Posts: 616
Re: question about 700 ultra mag actions

Sure wish I would have heard about the Brownells magazine box before I ordered the reamer for my 7mm RUM.

Spec'd the reamer so that magazine length catridges would be 0.005 inches off the lands.

Bet the magazine box is cheaper than the reamer and the barrel work. I did specify a tight neck also though, so at least I will have that going for me.
__________________
doug
Reply With Quote
  #5  
Old 02-26-2003, 09:47 PM
Platinum Member
 
Join Date: Jun 2001
Location: Palmer, Alaska
Posts: 2,539
Re: question about 700 ultra mag actions

Dave Kiff at Pacific Tool can hook you up with a throat reamer for $66.00 if you change your mind and decide to extend it and get the long box. An extra 70 bucks at this point, but it still might be worth it to you if the barrel is still off. Just a thought. [img]images/icons/wink.gif[/img]

[ 02-26-2003: Message edited by: Brent ]
__________________
Brent Moffitt
Reply With Quote
  #6  
Old 02-26-2003, 11:30 PM
Bronze Member
 
Join Date: Dec 2002
Location: Canada
Posts: 35
Re: question about 700 ultra mag actions

thanks for the info guys.

Brent:
i went to the brownells website and i think i found what you are talking about.
http://www.brownells.com/aspx/NS/sto...il.aspx?p=1405

that link should work i believe. it says it gives .110 additional length. that doesn't exactly sound like much but it might really make a difference. what do i know [img]images/icons/grin.gif[/img]
Reply With Quote
  #7  
Old 02-27-2003, 09:18 AM
Silver Member
 
Join Date: Aug 2002
Posts: 166
Re: question about 700 ultra mag actions

I wish they had something like that for the detachable mag versions. I have a .338 SS-DM that I would love to convert to rebarrel to a .300 Ultra...
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: question about 700 ultra mag actions
Thread Thread Starter Forum Replies Last Post
A question about custom actions. Murphy's Law Rifles, Bullets, Barrels and Ballistics 21 12-19-2010 06:25 PM
Actions and bedding question sdkidaho Rifles, Bullets, Barrels and Ballistics 2 01-31-2010 06:31 AM
Question About Actions C. Smith The Basics, Starting Out 4 01-04-2010 01:59 PM
300 ultra mag actions typicalhunter Rifles, Bullets, Barrels and Ballistics 6 01-14-2008 07:26 PM
Simple question about Rem700 actions. DontKickDontKill Long Range Hunting & Shooting 16 01-20-2004 07:02 PM

Current Poll
Do You Shoot Rifle Competition?
YES - 33.66%
764 Votes
NO - 66.34%
1,506 Vote
Total Votes: 2,270
You may not vote on this poll.

All times are GMT -5. The time now is 08:43 AM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC