7mm + IMR7828

[1899]

Anyone tried IMR7828 with 160gr Accubonds in a 7mm RM?
Opinions? Rants? Raves?

 

[blindside]

I would personally want to see nothing slower than 4350 in that proj. brass combo..IMO

 

[ricciardelli]

The range listed below works
IMR-7828 From 59.5 grains to 68.0 grains
CCI-200 Primer

But I preferred
Retumbo From 65.0 grains to 71.3 grains
CCI-200 Primer

 

[1899]

I would personally want to see nothing slower than 4350 in that proj. brass combo..IMO

Why? With large case capacity wouldn't you want to go with a slower powder and use up more volume? I have some 4350 kicking around as well.

 

[blindside]

162 GR. HDY SPBT
COL: 3.290"

H870 80.0 2883 43,300 CUP
RETUMBO 73.5C 2963 50,500 CUP
H1000 70.0 2905 49,600 CUP
H4831 64.0 2871 49,800 CUP
H4350 58.0 2799 49,400 CUP

7828 to slow

 

[blindside]

What kind of gun is it???

 

[1899]

H870 80.0 2883 43,300 CUP

:shock:
With 81.0gr of H870 and a 160gr Partitions I was getting just under 3100fps.

I am using a Steyr-Mannlicher S Luxus with 25.6" barrel (650mm).

Isn't Retumbo and H1000 slower than 7828?

 

[boney]

I have only tried one load using 7828 in my 7mm and one load with H-870 ( both no hell) but its really liking IMR4831 with the 160 Nosler Partition,and also RL-25 with the 175Nosler Partition(older semi-spitzer) Mine is a model 70 with a 26 inch barrel.

I have heard on other websites that RL-25 doesnt give a consistant burn,but I have experienced the opposite with SD's in the single digits.With 66.0grains of RL-25 and a 175 Nosler Part,I am getting great groups and average velocitities around 2815fps.

 

[todbartell]

Isn't Retumbo and H1000 slower than 7828?

yep, they're both slower burning, as is RL25



I personally would pick H4831 or H1000 when loading 160's in a 7mm Mag, but I'd even try Retumbo. I really like the Hodgdon Extreme line.

I did load 7828 in my 7saum w/ 162 gr. SST's and 175 gr. Interlocks. Got 2950 fps and 2800 fps (respectively) with the loads. I highly doubt that 7828 is 'too slow' for a 7mm Mag. :roll:

Hell, I've used H1000 in my 260 alot, and that is a small case.



try the 7828, it's a classic 7mm Mag powder, I think I read somewhere it is what the factorys used to load the original factory loads with.

 

[zedex]

I use 7828 in my 7 mag with superb results. Also use relodder 22 with as good results. I shoot 150 gn noslers and 162 gn interlocks.

 

[pupzit]

I like IMR4831 in my 7MM. I'm shooting 140gr. & 162gr Hornady SST's. I think slower powders perform better in heavier calibers.

 

[blackball]

If I have done my reading , 7828 was based on the factory powder used to develope the 7 mm rem mag . I also use IMR 7828 with a barnes X 160 gr bullet . feet per second at fifteen feet (corny distance from barrel ) 3100 . I use 61 grains of IMR 7828 for light skined animals Ie deer and 65 grains for elk moose and so on . Hope this helps . Joe

 

[pupzit]

I just done a little reading on this after reading some of the comments here, looks to me like IMR7828 would be an excellent powder for 7MM. Check out this site.
http://www.imrpowder.com/data/rifle/7mm-remmag-2005apr03.php

 

[Gibbs505]

When I had a 7rm, it loved H4831!

 

[Gatehouse]

7828 is a great powder for 160gr loads int he 7RM.

They are making a IMR 7828 SC now, too.

 

[martinbns]

Reloder 22 works really well in mine.

 

[Mystic Precision]

You will like the results of the IMR 7828. Has proven very accurate in both my 7RMs and 162gr bullets (amax and sst). Both did better with Re25 though. I am going to try Retumbo next as this is easier for me to buy.

h1000 is the fastest powder I would use with this bullet weight. Was just too fast in my rifles. H870 is supposed to be great but hasn't panned out in my rifles. Plus, no longer available.

I use Rem brass collet neck sized lit with Fed 215M primers. At ranges out to 1000m, both rifles shoot extremely well. Add in how well those 162gr Amax fly and I have my extreme range plinker.

Jerry