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416/300 Remington Ultra Mag

 
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  #1  
Old 01-25-2008, 08:27 PM
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416/300 Remington Ultra Mag

Does anyone have any information about this round? I have a 7mm RUM and a .338 RUM, I'm building a .300 RUM and want to build a large rifle to take to Alaska for BIG Costal Brown Bear and to Africa for Buffalo. I was thinking about something in .416 and since I already was working with the RUM cases this seems to make sense. I was curious if anyone and any ballistics or info on it??? Thanks!!!



Totch
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  #2  
Old 01-25-2008, 11:05 PM
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Join Date: Sep 2006
Location: Nebraska
Posts: 211
Ed Brown offers it and there is currently one for sale on gunsamerica. I saw an article about the Ed Brown in 416 RUM last winter and the writer like the cartridge but didn't like the bench work (surprise, surprise).

The 416 Dakota is very similar. Both are based off the 404 Jeffrey case. The Dakota w/ 400 gr bullet: MV 2450 fps, ME 5330 ft/lbs.

Last edited by Supermag; 01-25-2008 at 11:10 PM.
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  #3  
Old 01-25-2008, 11:22 PM
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Location: corpus christi,tx
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why not a 375RUM???????????????????? Sean Dwyer from remington took cape buffalo,wildebeest,sable, and all other kind of game with it on there testing trip. the 375 h&h has been killing all kinds of game of there for years.
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  #4  
Old 01-26-2008, 12:45 AM
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Totch

The 416 is a great round and meets the required size (Over 40 cal)
in some countries.

I designed and built one several years ago on a 375 RUM case that
that will exceed the 416 rem by 1000 ft/lbs and still not be loaded
near max called the .416 BUFF.

It can be built on a standard mag bolt face (.534 ) 700 Remingtion
with no changes to the action except maybe the rails .

Dave manson made the reamers and Hornady makes the dies.

Both Manson and Hornady have permission to make and sell the
.416 BUFF reamers and dies.

The .416 BUFF falls just below the .416 Weatherby in energy and
velocity.

There is a post on this rifle under Handloading dated 02-25-07
under .416 BUFF with some pictures if you are interested.

And by the way the BUFF has more case capacity than the Dakota
and the 375 RUM cases are easy to get.

Just a thought
J E CUSTOM
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  #5  
Old 12-23-2013, 12:29 AM
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Re: 416/300 Remington Ultra Mag

This is probably too late for an old thread, but here are my two shillings:

For a large inexpensive rifle in 416 the simplest answer is to handload the 416 Rigby.

For the 416, if I wanted 400 grains at 2400 fps, then I would get a 416 Ruger or 416 Remington. The same calibres would run the 350 grain .416" bullets at 2600 fps. However, if someone has a Rigby in a modern bolt action like the CZ, then loads that are probably in the high 50's and nudging 60,000 psi are very doable. Study the following picture:



These Rigby cases are from a 2013 cape buffalo, as is the bullet. The primers are delightfully rounded and are not pushing true max loads or flattened primers. Think of these loads as conservative, restricted loads for a "416 Weatherby-ish capacity."

The load? 101.5 grains Reloder 17, Fed 215 match primers, Hornady brass, and 350 grain TTSX bullets for an adjusted, chronographed muzzle velocity of 2825 fps.

The Rigby is basically equivalent to the 416 Weatherby, with 3-4 grains less powder and zero freebore.
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