7mm remem mag 180 eldm H870 quick load request

Justramit

Beginner
Jun 6, 2022
2
1
I was wondering if someone could run quickload for 7mm rem mag with 180 eldm. It is in 26" barrel and federal brass. I was given 8 lb jug of H870 and was trying to use it. Can't find any load data on it.
 

DrMike

Ballistician
Nov 8, 2006
34,987
1,365
Since H870 has been out of production for some time, and because the ELD series of bullets were introduced well after H870 was no longer produced, you won't find information. Fortunately, projections can still be generated with QL. Here you go.

Code:
Cartridge          : 7 mm Rem. Mag.(SAAMI)
Bullet             : .284, 180, Hornady ELD-M 28503
Useable Case Capaci: 70.847 grain H2O = 4.600 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 mm
Barrel Length      : 26.0 inch = 660.4 mm
Powder             : Hodgdon H870

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-10.0  100    67.68   2643    2793   40750  12119     95.0    1.572
-09.0  101    68.43   2678    2867   42321  12269     95.6    1.544
-08.0  103    69.18   2713    2943   43960  12413     96.2    1.517
-07.0  104    69.94   2748    3019   45673  12550     96.7    1.490
-06.0  105    70.69   2784    3097   47465  12680     97.2    1.463
-05.0  106    71.44   2819    3176   49338  12803     97.6    1.437
-04.0  107    72.19   2854    3255   51299  12918     98.0    1.411
-03.0  108    72.94   2889    3336   53351  13025     98.4    1.386  ! Near Maximum !
-02.0  109    73.70   2924    3418   55501  13124     98.7    1.361  ! Near Maximum !
-01.0  110    74.45   2960    3501   57753  13215     99.0    1.336  ! Near Maximum !
+00.0  112    75.20   2995    3585   60117  13297     99.3    1.312  ! Near Maximum !
+01.0  113    75.95   3030    3669   62593  13369     99.5    1.289  !DANGEROUS LOAD-DO NOT USE!
+02.0  114    76.70   3065    3755   65200  13433     99.7    1.266  !DANGEROUS LOAD-DO NOT USE!
+03.0  115    77.46   3100    3842   67932  13487     99.8    1.243  !DANGEROUS LOAD-DO NOT USE!
+04.0  116    78.21   3135    3929   70797  13531     99.9    1.220  !DANGEROUS LOAD-DO NOT USE!
+05.0  117    78.96   3170    4017   73794  13565    100.0    1.198  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba    112    75.20   3159    3988   76284  12736    100.0    1.194  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    112    75.20   2759    3043   46468  12964     92.8    1.467
 

DrMike

Ballistician
Nov 8, 2006
34,987
1,365
Consequently, H870 was my "go to" propellant in my 7 RM when I was using 175 grain Partitions and 175 grain Grand Slams. I still have a few pounds hiding around here.
 

Guy Miner

Master Loader
Apr 6, 2006
16,538
1,023
H870 was my choice for the 7mm Rem Mag and the 175 gr Nosler Partition I used to take a good bull elk in 2000. It worked well with Nosler & Sierra 175's.

I've probably still got my old load data filed away here if you'd like it. Only five grains of bullet weight off, but it looks like Dr. Mike has you covered.

A little sooty, but high velocity and fine accuracy. I haven't seen any in quite a few years.

By the way, welcome aboard the Nosler Forum. Nice place here. We'd like to see your results, once you load and test some of those 7mm Rem Mag loads.

Regards, Guy
 

nhenry

Beginner
Feb 7, 2022
120
163
I was wondering if someone could run quickload for 7mm rem mag with 180 eldm. It is in 26" barrel and federal brass. I was given 8 lb jug of H870 and was trying to use it. Can't find any load data on it.
Welcome to the forum!
 

SJB358

Ballistician
Dec 24, 2006
31,291
541
Consequently, H870 was my "go to" propellant in my 7 RM when I was using 175 grain Partitions and 175 grain Grand Slams. I still have a few pounds hiding around here.
Same here. I loved the stuff actually. It was the first powder I used in my 7mm Rem Mag and it worked like a champ with 140-175 Noslers!
 
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