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7mm vs. 7mm ultra mag?

 
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  #1  
Old 02-19-2009, 05:27 PM
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Join Date: Feb 2009
Posts: 3
7mm vs. 7mm ultra mag?

Hey guys , I'm fairly new to hunting I'm in my ealier 20's and I have just taken on the deer hunting a couple of years ago. I've been very intrested to find out what would be the better long range cartriage. I've recently owned a 7mm remington mag and had some good success with it. Being new to hunting the furthest i've shot a deer was about a 100 yards (which is probably a joke to some of you older and more expericened hunters lol) anyways I'm about to go out west in a couple of years and looking to make some considerably longer shots after some practice. I was wondering which chamber you would recommend. I've just picked up a sendro sfII 7mm ultra mag with a 9 1/2" twist ratio. I've heard some good things and some bad things about the 7mm ultra mag. Should I work the 7mm ultra mag or stick with the 7mm mag I have. Also, if you guys have any other suggetions on good chambers to use re-ply back. I have money to work with, so any other suggestions on a different caliber would be taken in great consideration.
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  #2  
Old 02-19-2009, 07:55 PM
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Join Date: Nov 2004
Location: colorado
Posts: 227
Re: 7mm vs. 7mm ultra mag?

I have both a 7mm rum and a 300 rum, the 300 is the orginal sendero model and the 7mm is a sporter model, BDL I think. I havent even shot the 7mm because I love the 300 so much, out to 1100 yds its deadly yesterday I dug the 7mm out of the mothballs to get her cleaned up to start shooting alittle but doubt I will ever like it as much as I do my 300
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  #3  
Old 02-19-2009, 08:20 PM
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Join Date: Jul 2004
Location: Texas
Posts: 5,384
Re: 7mm vs. 7mm ultra mag?

[QUOTE=tknc;263237]Hey guys , I'm fairly new to hunting I'm in my ealier 20's and I have just taken on the deer hunting a couple of years ago. I've been very intrested to find out what would be the better long range cartriage. I've recently owned a 7mm remington mag and had some good success with it. Being new to hunting the furthest i've shot a deer was about a 100 yards (which is probably a joke to some of you older and more expericened hunters lol) anyways I'm about to go out west in a couple of years and looking to make some considerably longer shots after some practice. I was wondering which chamber you would recommend. I've just picked up a sendro sfII 7mm ultra mag with a 9 1/2" twist ratio. I've heard some good things and some bad things about the 7mm ultra mag. Should I work the 7mm ultra mag or stick with the 7mm mag I have. Also, if you guys have any other suggetions on good chambers to use re-ply back. I have money to work with, so any other suggestions on a different caliber would be taken in great consideration.[/QUOTE


The 7 mm RUM is about the flattest factory round available.

The 7mm RUM using a 140gr bullet is flatter than a 22/250 with a 55gr bullet.

It has 24 percent more energy at 300yrds than a 7mmRem Mag and 12 precent
more than a 7 STW.

So I would recomend that you work on the 7mm RUM because it will shoot well
beyond 1000yrds.

140 and 160 accubonds are good for hunting and the 168 SMK is good for targets

J E CUSTOM
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Old 02-19-2009, 08:38 PM
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Join Date: Jun 2007
Location: Central Washington
Posts: 491
Re: 7mm vs. 7mm ultra mag?

[quote=J E Custom;263266]
Quote:
Originally Posted by tknc View Post
Hey guys , I'm fairly new to hunting I'm in my ealier 20's and I have just taken on the deer hunting a couple of years ago. I've been very intrested to find out what would be the better long range cartriage. I've recently owned a 7mm remington mag and had some good success with it. Being new to hunting the furthest i've shot a deer was about a 100 yards (which is probably a joke to some of you older and more expericened hunters lol) anyways I'm about to go out west in a couple of years and looking to make some considerably longer shots after some practice. I was wondering which chamber you would recommend. I've just picked up a sendro sfII 7mm ultra mag with a 9 1/2" twist ratio. I've heard some good things and some bad things about the 7mm ultra mag. Should I work the 7mm ultra mag or stick with the 7mm mag I have. Also, if you guys have any other suggetions on good chambers to use re-ply back. I have money to work with, so any other suggestions on a different caliber would be taken in great consideration.[/QUOTE


The 7 mm RUM is about the flattest factory round available.

The 7mm RUM using a 140gr bullet is flatter than a 22/250 with a 55gr bullet.

It has 24 percent more energy at 300yrds than a 7mmRem Mag and 12 precent
more than a 7 STW.

So I would recomend that you work on the 7mm RUM because it will shoot well
beyond 1000yrds.

140 and 160 accubonds are good for hunting and the 168 SMK is good for targets

J E CUSTOM
And the 168 and 180 grain Bergers are even better for targets! (I'm not a hunter, so I have no idea how they do there!)

Bill
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  #5  
Old 02-19-2009, 10:09 PM
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Join Date: Jan 2009
Posts: 196
Re: 7mm vs. 7mm ultra mag?

Use the 7 ultra it is very very very flat shooting, and no belt. Load a 160 or 180 gr bullet. The 7 rem mag is like your moms station wagon ( out dated).
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  #6  
Old 02-19-2009, 10:13 PM
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Join Date: May 2008
Location: South of Canada and North of Wyoming
Posts: 5,954
Re: 7mm vs. 7mm ultra mag?

tknc, if you crunch the numbers, it's hard to beat the 7mm RUM. I've shot a 7mm RM for many years and it's a great cartridge, but IMO it's an 800-900 yd hunting rifle. The RUM will get you well past 1K maybe 1300-1400 yds depending on load, elevation etc. If I had a choice between the two, the RUM would get the nod. In fact, I've been considering the 7mm RUM vs the 300 RUM and just recently picked the 300 because this particular rfile is a proven tack driver. Otherwise, I was leaning to the 7mm. If I get another rifle, it will likely be the 7mm RUM.

I'm not sure what bad you've read about the 7mm RUM but I cant think of any. Barrels burn out fairly quick, but that's the same for any of the 7mm mags.

If you like open country, you will like the West.

Good hunting,

Mark
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  #7  
Old 02-20-2009, 09:08 AM
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Join Date: Jul 2004
Location: Texas
Posts: 5,384
Re: 7mm vs. 7mm ultra mag?

Quote:
Originally Posted by MontanaRifleman View Post
tknc, if you crunch the numbers, it's hard to beat the 7mm RUM. I've shot a 7mm RM for many years and it's a great cartridge, but IMO it's an 800-900 yd hunting rifle. The RUM will get you well past 1K maybe 1300-1400 yds depending on load, elevation etc. If I had a choice between the two, the RUM would get the nod. In fact, I've been considering the 7mm RUM vs the 300 RUM and just recently picked the 300 because this particular rfile is a proven tack driver. Otherwise, I was leaning to the 7mm. If I get another rifle, it will likely be the 7mm RUM.

I'm not sure what bad you've read about the 7mm RUM but I cant think of any. Barrels burn out fairly quick, but that's the same for any of the 7mm mags.

If you like open country, you will like the West.

Good hunting,

Mark
ON the barrel burn out issue.

Any over bored cartrige will burn out faster than a standard one.

P O Ackley did a lot of testing on this problem and so did the military they both came to the
same conclusions that any round that exceeded 3000 ft/sec and was over bored (Like most
Magnums ) would be harder on barrels.

Powder erosion is the biggest problem with over bored rounds because a lot of powder gets
pushed out of the chamber and against the throat that has not burned yet.

Ball powder was developed to minimize this problem because it was though that the shape
was easer on the throat.

As far as the throat erosion of the 7mmRUM it will probably last 12 to 1500 rounds with good
loading and cleaning practices ( A lifetime of hunting ).

The heaver bullets will help with barrel life ( Lower velocity and more complete burn of
powders ) plus better BC for long range .

The big 7mmRUM was made for big bullets and will amaze you how accurate it is when set
up with the right powder and bullet combo.

J E CUSTOM
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