The Firing Line Forums

Go Back   The Firing Line Forums > The Skunkworks > Handloading, Reloading, and Bullet Casting

Reply
 
Thread Tools
Old March 7, 2005, 08:59 PM   #1
trigger45
Senior Member
 
Join Date: October 7, 1999
Location: TEXAS,USA
Posts: 280
reloading the 7mm Rem Mag

whats the hardest thing about reloading the 7mm mag? how long does the brass last? sould i get the $100 dies or will the $20 -$40 ones work? any other info willl be wonderful. does the belt cause problems?
__________________
5.56x45, .243win, 6.5x55SE, 6.8 spc, .270 win, 9x19mm,.45acp, .410, .50bp, 12ga.
I would like to see a modern 7x57and 8x57 in my safe.
trigger45 is offline  
Old March 7, 2005, 09:15 PM   #2
HSMITH
Senior Member
 
Join Date: June 21, 2002
Posts: 2,019
What kind of rifle is it? How accurate is the rifle with factory loads it likes? How accurate do you want it to be? What is the intended purpose of the loads you want to build?

If you are building ammo for a target rifle or expect target grade accuracy a nice set of dies like the Redding competition series are well worth the money. If you want to make good hunting ammunition then you can use the lower cost die sets with good results.

Brass will last differently depending on pressures. If you are running hot top end loads you will start getting loose primer pockets and/or split necks as early as 5 loadings, cases will also stretch much faster and need trimming every couple loadings when loading hot. If loads are more along the lines of factory ammo then cases might last 10 loadings, and possibly a lot more if you anneal necks every 3 or 4 loadings.
HSMITH is offline  
Old March 8, 2005, 06:16 PM   #3
Ruger # 1
Member
 
Join Date: December 6, 2004
Location: Ohio
Posts: 86
The cheaper dies work just as well as the higher dollar ones. Loading for the 7 Mag. is really no harder than any other cartridge. I have had no problems with brass life so far. As long as you're not loading for the Browning BAR, your best bet is to set your dies to partially size your case. If you set up this way, you are headspacing off of the shoulder instead of the belt. This will greatly increase brass life.

Hope this helps!
Ruger # 1 is offline  
Old March 8, 2005, 09:28 PM   #4
Mike Irwin
Staff
 
Join Date: April 13, 2000
Location: Northern Virginia
Posts: 36,074
One of the biggest PIAs about loading belted magnums is that you can sometimes get a pressure ring right at the top of the belt that resists resizing, and it can cause chambering problems.

The solution to that is, of course, Ruger's neck sizing only.

I really like the 7mm Mag., but I REALLY wish someone would make a version, identical in every way, save for the belt.

Same with the .338. I'd love one without the belt.
__________________
"The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza

Baby Jesus cries when the fat redneck doesn't have military-grade firepower.
Mike Irwin is offline  
Old March 8, 2005, 10:19 PM   #5
Robert M Boren Sr
Senior Member
 
Join Date: December 29, 2004
Location: NW Montana
Posts: 267
Quote:
I really like the 7mm Mag., but I REALLY wish someone would make a version, identical in every way, save for the belt.
Check out the RUM's.
Robert M Boren Sr is offline  
Old March 8, 2005, 10:43 PM   #6
Mike Irwin
Staff
 
Join Date: April 13, 2000
Location: Northern Virginia
Posts: 36,074
The 7mm Ultra Mag is nearly 2/5ths of an inch longer than the 7mm Mag.

Why?

I want a standard 7mm Remington Magnum sans belt.

The 7mm Remington Mag. is just fine as it is, other than the belt.
__________________
"The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza

Baby Jesus cries when the fat redneck doesn't have military-grade firepower.
Mike Irwin is offline  
Old March 8, 2005, 11:25 PM   #7
MTMilitiaman
Senior Member
 
Join Date: October 14, 2004
Location: NW Montana
Posts: 1,875
I agree. I've wanted a standard length beltless magnum for years. If such a thing as a beltless Holland and Holland exists, that would be great, but I have always thought it would be more practical to base it such a line of cartridges off of the modernized .404 Jeffery case, which seems to be all the rage these days. Such a cartridge line would be very similar to the Dakota Magnums save for the more common .532 inch bolt face made possible by a rebated rim as well as cheaper and more available rifles and brass. At first I was hoping that Remington would shorten their Ultra Mag line. Well, they did, but it was too short and they completely skipped the standard length action. My hope now is that Winchester, having taken the WSM case as short as it can practically be (and then some), nearly to the point of absurdity, will jump up an action length and create a line of standard length beltless magnums based on the same case. Such a line wouldn't do much that hasn't been done before, but a good case could be presented that no cartridge introduced in at least the last fifty years has really done anything too new and exciting. Ballistic performance might be on par with the Weatherbys, or exceeding the standards of their comparable standard length belted kin by 100 to 200 fps depending on barrel length, bullet weight, ect. But there would be no belt.

That said, I have a 7mm Rem Mag and have experienced little or no difficulty in loading for it once the dies are set up to headspace off the shoulder. My loads have always been at or near max and brass life appears very good. I don't do as much shooting as I'd like but most of my brass are on their 3rd or 4th load and once they are shined up, look and function pretty much good as new. I load Remington brass and am currently loading 160 gr Noslers and a max listed charge of RL22. I don't have a whole lot of experience loading for this cartridge or any other but I would say it is pretty much common sense--keep things sane and your equipment will last you longer.
MTMilitiaman is offline  
Old March 9, 2005, 01:13 AM   #8
Mike Irwin
Staff
 
Join Date: April 13, 2000
Location: Northern Virginia
Posts: 36,074
Probably the closest British cartridge, sans belt, to the 7mm Rem. Mag. is the .280 Ross. According to Cartridges of the World, using a 140-gr. bullet and IMR 4895, you can get 3170 fps out of it. Unfortunately, it's been obsolete for decades in this country.

The .275 H&H is very similar in performance, but you guessed it... it's belted. Of course, you could have an unbelted version, but it has a nice, fat, rim.

From Germany you've got the 7x64 Brenneke, which I believe is actually being chambered in a few guns these days.

There's also the thoroughly obsolete 7x66 Vom Hofe, which COTW claims beats the 7mm Rem. Mag. by 300 fps. with the 170-gr. bullet. Toasty.
__________________
"The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza

Baby Jesus cries when the fat redneck doesn't have military-grade firepower.
Mike Irwin is offline  
Old March 9, 2005, 01:53 PM   #9
MLC
Senior Member
 
Join Date: October 9, 2001
Location: New Hope, PA
Posts: 230
Mike, the 280 Ackely improved is the closest I think you can get to a beltless 7mag that is similar in dimension and performance.
It's darn close to the 7mag in all velocities.
MLC is offline  
Old March 9, 2005, 04:37 PM   #10
Poodleshooter
Senior Member
 
Join Date: August 7, 2000
Location: Floating down the James River in VA
Posts: 2,541
Quote:
whats the hardest thing about reloading the 7mm mag? how long does the brass last?
Paying for powder when you're getting only about 100rds per pound.
My brass doesn't last very long due to the ring problem Mike mentions above. This usually happens after about 5 firings. I don't like shooting or reloading my 7mm Rem Magnum much. It's not a very economical or efficient cartridge.
Poodleshooter is offline  
Old March 25, 2005, 11:45 PM   #11
bobelk99
Senior Member
 
Join Date: February 18, 2005
Location: Central KY
Posts: 220
Loading 7MM

I have shot a Remington 700 7Mag some 4,000 times (not a typo) with various loads using 'cheap' RCBS dies and Remington brass. Get 5 to 8 reloads per case depending on pressure.
I realize every gun is different. I settled on 175 Nosler partition semi-spitzer for hunting elk. 5 shot groups bench were around .75 inches with 60.0 grains of IMR 4831.
Most accurate load was 162 grain Nosler solid base, with best 5 shot bench group of .372. This was with 61 grains of IMR4831
Keep primer pockets clean, and check length before every reload. Watch the belt bulge. This has not been a problem for me. I did suffer one partial case separation due to not checking brass closely enough, and loading once too many. I now discard brass after 8 reloads regardless of appearance.
IMR 4350 proved to be 2nd most desirable powder.
Belted mags are finicky. I suggest starting 10% below max, and testing upward a half grain at a time to find the accurate load for your gun. Using this process I have shot belted mags over 10k times with no mishaps.
bobelk99 is offline  
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 01:08 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2014 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Contact Us
Page generated in 0.08035 seconds with 9 queries