Home Forums Reloading Big Game Rifles 7 Rem Mag, 162 Amax, H1000, H 4831 suggestions?

New to me rifle. Have the above bullets and powders along with Rem brass and Tula magnum primers.
I looked at the Hodgdon data to get an idea as to where to start, but does anyone have any favorite loads with those components?

Do you think I can safely get 3000 fps with a 24" inch barrel?

Also, I'm new to this cartridge. Why are the pressures so low on the Hodgdon site?

Thanks

The modern loading manuals have completely emasculated the grand old 7RM.
My 26" .280AI got a comfortable 3050 with that bullet.
The 7RM with greater case capacity is surely capable of better than that.

I'll run your components through QL and see what I come up with.

As I suspected H1000 seems too slow. You run out of capacity before you get good pressure.
H4350 is a bit better but a little on the fast side.

GL also shows that Magpro is your huckleberry. I love Magpro.


What is your OAL?

I just got the bullets this afternoon and haven't put anything together yet, so I don't know how long they will end up.

The mag box gives me 3.4".

I don't have any 4350. H4831 and H1000. That's too bad about the 1000, I just bought it and it set me back $25 plus tax. Oops. I thought I'd read here that Retumbo and H1000 and the go-to powders with this catridge and bullet and that the H1000 did a little better temp. swings.I have to run but will check back later. Thanks for running the QL for me.
I should be able to make it out the end of the week with trial loads and the chrono.

Sorry about the 4350.

4831 is better and at 100% load density you'll be knocking on the door of 3000.

Thanks!

H1000 is a good powder with 162gn bullets in a 7mm Rem Mag,although RL25 is better. In my 700CDL 7mm Rem Mag 26"bbl I get 2990fps with a max load of H1000 and a 160gn Nosler Accubond.

Like I said, the grand old 7RM has been utterly emasculated by SAAMI and the loading manual publishers.

I had 10 grains less case capacity in my .280AI and using published book loads I easily reached 3050 with the 162 Amax and 3000 with the 168 VLD out of a 26" barrel. Those speeds were in line with the predicted speeds as well so I wasn't running over pressure.

Not saying it isn't an effective cartridge just that it isn't performing as it should given it's capacity.

IDMilton,

I have reloaded more than a few 7MM Rem Mag rounds. I use IMR 4350 almost exclusively. I've had excellent luck with it. Using my Sako Classic, I can easily get 3100+ FPS using 160 Partitions out of a 24" barrel. I can easily get better than 3200 FPS with 150 Ballistic Tips using the same powder. Neither of these loads showed signs of excessive pressure. Both are extremely accurate.

I have tried R22 with 160 Speer Hot Core bullets. I did manage to get better than 3200 FPS, but this load was nowhere as accurate as the Partition load. And it was a little too hot for my liking.

I reload primarily for accuracy. I am convinced game does not know a couple hundred FPS one way or the other.

I had a friend who used 63.5 grains of H4831 with 154 grain Hornady spire point bullets. It was a light 7MM Mag load. It did drop mule deer in their tracks.


Best of Luck,

R

Thanks for the advice. If I can't get the 1000 or the 4831 to work, I'll try one of the other powders.

If the H1K and or 4831 doesn't perk then I'd be all over 7828 and R25

Dober

I get 3050fps out of my Rem 700 24" bbl with re-22 and 162gr A-max, IMR-7828 does about the same.

Retumbo.

I like RL25 these days with the 7Rem Mag and 160+ gr bullets.Over 3000 with a 162 should not be an issue.

I've had great accuracy with H1000 and 168 Bergers. I'd try it with the Amax. I haven't chronoed anything with H1000 but book velocities aren't slower than other powders in that burn rate. It's a very insensitive powder too. Great stuff.

Have you considered trying RE25???

Am I the only one that thinks that Retumbo is a tad too slow for the 7mm Rem? I've damned near burnt out a barrel trying to make it work right with the 168 VLD.

My best results with the 162 A-Max were at around 60 grains of RL-22, but the velocity was uninspiring. And so it goes for me with the 7mm Rem and heavy bullets. Good velocities yield marginal accuracy or excessive pressure, and good accuracy comes at low velocities.

This is a Sendero/Swarovski/Jewel combo that is capable of, and has demonstrated, absurd accuracy with 139 grain bullets.

Can you share some specifics? I'm about to do a workup with H1000.

I would think so. I used 60 grains of RL-22 behind that bullet and the 168VLD in my .280AI and was comfortably over 3000 with each.