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  #1  
Old 12-03-2007, 08:11 AM
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Pros and Cons of the 300 ultra mag


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One of my good friends has a 300 ultra mag for sale for a price that seems to good to be true. It is a Model 700 stainless, I can buy it with or without the Vari X 3 scope that is on it.

I am trying to figure out the pros and cons of this cartridge. I already have a .338 win mag, 30.06 gov, and a .264 win mag in my battery, so I am not really sure where this rifle would fit in. On the other hand I was also wondering if this action would be good to maybe build something that I would rather have, ie 375 H&h or maybe a 416 Rigby!

Any feedback would be greatly appreciated. My next step would be working on the wife!
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  #2  
Old 12-03-2007, 08:19 AM
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It's just one of the best 300 mags ever introduced. My hunting buddies shoots a 180 grain factory loading at 3380 fps over my chrono. That makes for a really flat shooting rifle that carries lots of energy to big game. He's killed several deer and elk in excess of 600 yards with his. With Remingtons Long magnum Action it would build a dandy 375. Is the Rigby the same case length as the 375 case?
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  #3  
Old 12-03-2007, 09:01 AM
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My father-in-law bought a M 700 300 RUM and was gonna build a 375 but the smith convincenced him that the caliber was worth having b/c it would be enough for plains game in Africa and pretty much anything in North America. He kept the caliber and just bought a 375. He got his for a great price as well. A guy that didn't appreciate the recoil hadn't even shot enough to zero his scope. I've got one and if it were me and the price was right I'd buy and shoot it all day.

I'd be interested to know if you could build a 416 Rigby off that action as well.
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  #4  
Old 12-03-2007, 11:09 AM
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I think it's a neat caliber. But, last night I was looking over Midway's latest sale flier. They have Rem 300 UM brass on sale for $58 or $68 per 100! The brass is over twice as expensive as other calibers...ouch!

Last edited by leverite; 12-05-2007 at 08:55 PM.
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  #5  
Old 12-03-2007, 01:52 PM
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That and you'll burn alot of extra powder!!
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  #6  
Old 12-04-2007, 04:14 AM
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Quote:
Originally Posted by leverite View Post
I think it's a neat caliber. But, last night I was looking over Midway's latest sale flier. They have Rem 300 UM brass on sale for $58 or $68 per 100! The brass is over twice as expensive as other calibers...ouch!
That's actauly a pretty good price. I've been seign it for around $75 to $80 per 100. Gonna check that out. Thanks for tip.
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  #7  
Old 12-05-2007, 12:26 PM
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Well I did some checking last night on case lengths. The 416 Rigby has a case length of 2.90" and an overall length of 3.720". The 375 H&H has a case length of 2.850" and an overall length of 3.60". The 300 RUM has a case length of 2.850" and an overall length of 3.60". From this information it seems to me that I could build a 375 H&H out of this rifle but I am not sure with the added length of the 416 that I would be a able to build it. Does this sound right to you guys.

Thanks
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  #8  
Old 10-30-2009, 10:04 PM
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Who all is using the Ultra Mags around here now ?
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  #9  
Old 10-31-2009, 06:14 AM
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Just a hurried thought...if you are going to build a .375 H&H out of the Ultra, it would be MUCH cheaper to just find a .375 on Gunbroker or some other site and buy it instead.

Also, I am not sure if the bolt face and magazine of the Ultra are workable with the H&H.
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  #10  
Old 10-31-2009, 06:42 AM
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Originally Posted by wildhobbybobby View Post
Just a hurried thought...if you are going to build a .375 H&H out of the Ultra, it would be MUCH cheaper to just find a .375 on Gunbroker or some other site and buy it instead.

Also, I am not sure if the bolt face and magazine of the Ultra are workable with the H&H.
The rebated rim on the 300 RUM is .534" while the 416 Rigby has a .590" rim. The magazine might also be a problem because the case body is roughly .040" bigger. It would definitely be more cost to change it over to the 416 and would be discarding a very useful chambering, as long as the recoil doesn't bother you.
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  #11  
Old 10-31-2009, 10:43 AM
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.300 RUM doesnt impress me, heres why. It only holds a legit advantage past 3-4 hundred yards over the convetional magnumns, and if your going to be shooting that far practice is a must, but if you do any substantial practicing with the particular cartridge, you will be replacing the barrel, id prefer to get more than 3-4 hundred rounds through my barrel before i use it as a club. also i would rather have a bigger bullet going a bit slower.
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  #12  
Old 10-31-2009, 10:51 AM
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I want the RUM to push the heavy 220 and 240gr Matchkings at 2900fps.
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  #13  
Old 10-31-2009, 02:10 PM
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If you want it, buy it. Where is the rule that says you have to have a "need" for a gun to buy it?
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  #14  
Old 10-31-2009, 03:38 PM
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yep.. nobody said it would do anything but cost you more money to shoot..
so just buy it then buy that other one you thought about making..
if you families provided for. go gettum.. you ain t gonna take any money with you
when you leave this world..no use leaving none to you kids ...they better off making it thier selves..good luck withum.
get back to us on this gun an let us know how she does..
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  #15  
Old 10-31-2009, 05:40 PM
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I want the RUM to push the heavy 220 and 240gr Matchkings at 2900fps.

You really need to quit messing around with this wussy stuff and go with the fit e.
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  #16  
Old 10-31-2009, 06:47 PM
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Matt, I dont like the 50's, they just dont trip my trigger. I've shot all the Barrett's and even the Armalite. I will hunt with my Sendero, its hard to lug a 35lb Barrett around.

You stick with your 30-06 based stuff, and I'll play with the manly guns. Yeap, I could kill tiny VA deer with a .22 LR, but there is just something that makes me giggle about doing a double shoulder shot and watching them drop where they stand. The only tracking I have to do, is crawl out of my heated box blind and walk over to them. After I finish my coffee ofcourse.
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  #17  
Old 11-02-2009, 01:37 PM
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Don't butcher the Model 700

While a .375 or .416 would be nice to have, so is the .300 RUM. If you turn the .300 RUM into a big-bore project gun you will be paying almost as much as a .375 or .416 costs, using a .300 RUM you could have sold in the process, and end up with a dangerous game rifle without controlled round feeding. This just doesn't make strategic or economic sense. You would be better off selling the .300 RUM and building or buying exactly what you want.

The .300 RUM is a perfect round for Muleys, Elk & Moose in areas where you may be presented with a LONG shot. I would love to stumble across a Sendero SF in .300 RUM for a nice price.
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  #18  
Old 11-02-2009, 04:45 PM
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Buy the 300 RUM and yard the barrel of it. Rebarrel with a custom barrel and chamber it in 375 RUM and all you problems will be over. 375 Rum will do everything the H&H will do and more.
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  #19  
Old 11-03-2009, 11:02 AM
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Tang I responded to an earlier post by you on the 300RUM, you said you were awaiting the arrival of e new one. Keep me posted with any data you aquire or expirience. I purchased one last year and have just begun to actually do some shooting with it. My father rcently purchased some new RCBS reloading equipment and although he has been reloading alot of 45acp with his Dillon in the past years, we know very little about rifle loading and will soon be dabbling in it with my RUM.
I have had some factory ammunition questions and concerns and the statements above regarding barrel life are a little disturbing.
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  #20  
Old 11-03-2009, 11:04 AM
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Quote:
Originally Posted by osprey572ci View Post
Tang I responded to an earlier post by you on the 300RUM, you said you were awaiting the arrival of e new one. Keep me posted with any data you aquire or expirience. I purchased one last year and have just begun to actually do some shooting with it. My father rcently purchased some new RCBS reloading equipment and although he has been reloading alot of 45acp with his Dillon in the past years, we know very little about rifle loading and will soon be dabbling in it with my RUM.
I have had some factory ammunition questions and concerns and the statements above regarding barrel life are a little disturbing.

Check your private messages, I sent you a PM insteads of taking the thread off in another direction.
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