7mmRM the bset of the best for high quality handloads
1milesniper
July 30, 2008, 01:06 PM
what is the very best in dies, resizers, cases, for the big 7. i'm on a barrel warranty for the next 8 months, after that i can run handloads in my new rifle. but have not loaded for the 7mmRM. i hear the trick is finding a good way to resize the brass. i live 20 minutes from Hornady's main office, i've used there stuff on 6mm, and 22-250, none of which are belted mags. any exspertise would be greatly appriciated.
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dakotasin
July 30, 2008, 01:45 PM
redding or rcbs dies are fine.
when you resize, just size off the shoulder like you would for any other cartridge - neck sizing is perfect. ignore the belt.
run 162 grain hornady behind some rl-25, or some 150 grain sierra backed by h-4831 and you will have teriffic hunting loads.
hornady a-max and rl-25, 22, or h-4831 for paper-punching - but really, this is not a paper-punching chambering.
the 7 rem mag is my all time favorite chambering.
matrem
July 31, 2008, 10:04 PM
The 7 Rem mag is my favorite as well.Started loading for it(my very first "high powered" rifle )back in high school (mid seventies)Have to admit that I've not loaded as many rounds of that as .223 or .357/.38,but I have loaded "quite a few" and IMO any of the well known die makers make dies that are certainly capable of anything that I'm capable of. As Dakotasin said,never mind that belt(believe that started with the extreme slope on the shoulders of the H&H cartridges).Experiment by adjusting your die untill you're headspacing on the shoulder.You'll not only get more shots per brass,I think you'll find repeatability (read accuracy) improves as well.I've only used WW,Rem,PPC,and Fed cases,can't say I've noticed a marked difference in them.Powder selection,bullet type & primer have proven to be the most influential in my 7 mag,but that's my bbl.Your's,more than likely,will have some of "it's" own opinions.
Zak Smith
August 1, 2008, 01:00 AM
Heck, in 8 months the 7RM barrel could be toast if you like to pull the trigger (I do). The guys here that have worn out 7RM barrels seem to get about 2000 rounds, plus or minus maybe 250, before the groups start to open up.
If you need ballistics that factory ammo can't provide due to poor bullet selection, you might consider just loading for it now, the warranty be damned. That's what I'd do. In my recent 7RM build, I am shooting the 180gr Berger VLD-- it's a great long-range bullet with a BC of 0.684.
Der Verge
August 1, 2008, 11:43 PM
I have used RCBS X FL Die for my 7, Have not worn any brass out yet, but then, this is not my practice rifle. I have worked hard to adjust the die so all I am doing is bumping back the shoulder a few thousandths, like you would have to do after neck sizing a few times. Though I am FL sizing, I am cheating, and my cases will NOT chamber in most other rifles.
Here are two good combos........
Hornady 139gr SST .020" off the lands pushed by H-1000 and CCI BR2 3/8" @100
Barnes 140gr TSX .020" " pushed by a healthy dose of RL-22, also 3/8" @ 100
175 Nosler Partition " " " " RL-22 1/2" @ 100
This is an awesome caliber, and can be quite accurate if you take the time to develop your loads. All three above are well above any published max, though safe in my rifle, but the reason I will not list the charges. Enjoy your rifle.
As for the warranty, funny story.........
When I sent in my warranty card for my Savage .223, I wrote down my best group size, and stated that I had used hand loads, which effectively voided the warranty, before it even started.
I would say, if the gun is not one of extravagant expense, heck with the warranty.
dakotasin
August 2, 2008, 11:11 AM
yep... i'm afraid the first thing i do w/ all my guns is void the warranty. between glass bedding, floating, and trigger adjustment or replacement, i think the warranty is voided before it even sees a handload... i never feed factory to my rifles, so if it is my gun you can be assured all it gets is handloads.
NCsmitty
August 3, 2008, 01:38 PM
I had a couple Remington 700 7mm Remags back in the day, and they were outstanding. Wish I had them back again. I still have the Herter's dies for it. They were the version with the window in the seating die that you dropped the bullet in to seat it and it had a sleeve that moved to enclose it as the case was inserted. It worked very well. I hunted woodchucks and at the time Remington had a 100gr. bronze point that I used in the loads at around 3500fps. It would turn those bad boys inside-out. The 7MM Mag is still a very popular round.
NCsmitty
flashhole
August 3, 2008, 05:11 PM
I have a set of Hornay Dies and a set of Lee Deluxe Dies for my 7mm Rem Mag. I usually end up with a mixed set that get used. You will be using your own fire-formed brass when you reload so I suggest a Lee Collet Neck Die. The Hornady sliding shaft seat die is pretty good, especially with the micrometer option, and you will get good ammo with this combination of dies. Component selection will be equally as important as die selection. I have had the best results with Hodgdon Retumbo powder with bullet weights 140 grains and up. I feed my gun a steady diet of Nosler or Sierra bullets. Both are accurate to the point they make me smile when I pull the trigger.
ForneyRider
August 4, 2008, 01:39 PM
I use the Lee deluxe dies on 7mm Mag. I neck size and keep trimmed to length.
Having a lot of fun with Nosler 120gr Ballistic Tips and Sierra 120gr Pro Hunter.
The Nosler's I loaded up to max with RL22. These things fly at 3500fps and have same trajectory as my dad's .22-250. Lots of kick though. Accuracy is great.
The Sierra 120gr I loaded down to 3000fps with various powders, IMR-3031, IMR-4064, RL22, RL19, IMR 4350, H-Varget, just to use up the powder.
Also, I use the Hornady SST and bonded in 139gr and 162gr. I went with a load halfway between min and max for those loads.
Remington, Winchester range brass. Federal large rifle magnum primers.
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