New to reloading

sask boy · Jun 16, 2018

I have a young fellow that would like to get into reloading and he has been reading as well as talking to many people about loading for his 7mm mag.
I recommended that he try the 160gr AB our Partition over top of IMR 4350 powder as I have been using that powder of almost 40 years in the 7. He is all for using Partitions, but has told me that everyone is telling him to try H1000.
I was going to tell him :shock: that he could go to one of the other people that seem to reload as well for instruction but then decided maybe H1000 would be something new for me as well.
Does anyone have any experience with this powder? Could also get a quick load sheet.
John bought himself a Browning X-bolt which I believe has a 26" tube on it.
Thanking everyone in advance.

Blessings,
Dan

Elkman · Jun 16, 2018

Dan
I have used H-4350 a lot and had very good results in my 7mm Mag and my 7Mashburn. Also limited use of the 1000. Most will tell you 1000 is better. But it depends upon the rifle, my Mashburn likes the 4350, the 7mm Mag likes the 1000.

DrMike · Jun 16, 2018

H1000 has historically been one of the classic powders for the 7mm RM pushing a 160 grain pill. Am I correct in saying that he will be loading for a 7RM? Verify this for me, and I'll be glad to run a projection for you, Dan.

mjcmichigan · Jun 16, 2018

I have IMR 4350 and H1000.
Generally I get better results in my Rifles with IMR4350

Sent from my iPhone using Tapatalk

TackDriver284 · Jun 16, 2018

I have tried a variety of powders for the 7mm Rem. Mag and settled with the 160 AccuBond and Retumbo, its accurate at 3,140 fps. Hits like a hammer with the 26 inch tube. I can say H1000 is a great powder, but never tried it since the Retumbo shot very well.

truck driver · Jun 16, 2018

Well Dan I have only tried one bullet in the 7Rm and one powder.
160gr Nosler AccuBond in Nosler brass ,2.704" ogive seating depth, 3.290" OAL 69.5grs H1000 2981fps 26" barrel .5" groups at 100yds. Max charge was 71.59grs H1000 QL vel 3075fps 59098psi.
Start 10% below my 69.5gr load and work up to max to find the best load.
I was in a hurry when I developed this load for a back up to the 338win for Montana and was safe in my gun.

DrMike · Jun 16, 2018

Code:

Cartridge          : 7 mm Rem. Mag.(SAAMI)
Bullet             : .284, 160, Nosler AccuBond 54932
Useable Case Capaci: 72.296 grain H2O = 4.694 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 mm
Barrel Length      : 26.0 inch = 660.4 mm
Powder             : Hodgdon H1000

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   97    63.72   2742    2672   41866  10983     96.2    1.460
-09.0   98    64.43   2776    2737   43374  11106     96.7    1.436
-08.0   99    65.14   2810    2804   44944  11223     97.2    1.412
-07.0  100    65.84   2843    2872   46577  11335     97.6    1.388
-06.0  101    66.55   2877    2941   48277  11440     98.0    1.365
-05.0  102    67.26   2911    3010   50047  11538     98.4    1.343
-04.0  103    67.97   2944    3080   51873  11630     98.7    1.320  ! Near Maximum !
-03.0  104    68.68   2978    3151   53813  11715     99.0    1.298  ! Near Maximum !
-02.0  105    69.38   3012    3222   55816  11793     99.2    1.277  ! Near Maximum !
-01.0  106    70.09   3045    3295   57904  11863     99.4    1.255  ! Near Maximum !
+00.0  107    70.80   3079    3368   60084  11926     99.6    1.234  ! Near Maximum !
+01.0  108    71.51   3112    3441   62359  11981     99.8    1.214  !DANGEROUS LOAD-DO NOT USE!
+02.0  110    72.22   3146    3515   64731  12029     99.9    1.194  !DANGEROUS LOAD-DO NOT USE!
+03.0  111    72.92   3179    3590   67222  12068    100.0    1.174  !DANGEROUS LOAD-DO NOT USE!
+04.0  112    73.63   3212    3666   69819  12098    100.0    1.154  !DANGEROUS LOAD-DO NOT USE!
+05.0  113    74.34   3245    3742   72536  12122    100.0    1.135  !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    107    70.80   3224    3692   73516  11411    100.0    1.138  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    107    70.80   2868    2923   48538  11768     94.3    1.360


Cartridge          : 7 mm Rem. Mag.(SAAMI)
Bullet             : .284, 160, Nosler PART SP 16327
Useable Case Capaci: 74.317 grain H2O = 4.825 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 mm
Barrel Length      : 26.0 inch = 660.4 mm
Powder             : Hodgdon H1000

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   96    64.89   2753    2692   41951  11256     96.5    1.458
-09.0   97    65.61   2786    2758   43453  11381     96.9    1.434
-08.0   98    66.33   2820    2825   45015  11499     97.4    1.411
-07.0   99    67.05   2854    2893   46639  11611     97.8    1.387
-06.0  100    67.77   2887    2961   48328  11717     98.2    1.364
-05.0  101    68.50   2921    3031   50087  11817     98.5    1.341
-04.0  102    69.22   2954    3101   51917  11909     98.8    1.319  ! Near Maximum !
-03.0  103    69.94   2988    3171   53824  11994     99.1    1.297  ! Near Maximum !
-02.0  104    70.66   3021    3243   55809  12072     99.3    1.276  ! Near Maximum !
-01.0  105    71.38   3055    3315   57880  12143     99.6    1.255  ! Near Maximum !
+00.0  106    72.10   3088    3387   60039  12206     99.7    1.234  ! Near Maximum !
+01.0  107    72.82   3121    3461   62290  12261     99.8    1.214  !DANGEROUS LOAD-DO NOT USE!
+02.0  109    73.54   3154    3535   64640  12308     99.9    1.194  !DANGEROUS LOAD-DO NOT USE!
+03.0  110    74.26   3187    3609   67094  12346    100.0    1.174  !DANGEROUS LOAD-DO NOT USE!
+04.0  111    74.98   3220    3684   69659  12376    100.0    1.155  !DANGEROUS LOAD-DO NOT USE!
+05.0  112    75.71   3253    3760   72337  12402    100.0    1.136  !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    106    72.10   3231    3709   73509  11681    100.0    1.137  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    106    72.10   2879    2945   48475  12073     94.7    1.360

Code:

Cartridge          : 7 mm Rem. Mag.(SAAMI)
Bullet             : .284, 160, Nosler PART SP 16327
Useable Case Capaci: 74.317 grain H2O = 4.825 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 mm
Barrel Length      : 26.0 inch = 660.4 mm
Powder             : IMR 4350

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   81    55.35   2713    2615   44759  10009     98.8    1.437
-09.0   82    55.97   2739    2665   46055  10099     99.0    1.418
-08.0   83    56.58   2765    2716   47385  10187     99.2    1.399
-07.0   84    57.20   2791    2767   48750  10271     99.4    1.381
-06.0   85    57.81   2817    2818   50151  10351     99.5    1.363
-05.0   86    58.43   2842    2870   51588  10428     99.7    1.345
-04.0   87    59.04   2868    2922   53064  10501     99.8    1.328  ! Near Maximum !
-03.0   88    59.66   2893    2974   54578  10571     99.9    1.310  ! Near Maximum !
-02.0   88    60.27   2919    3026   56133  10637     99.9    1.294  ! Near Maximum !
-01.0   89    60.89   2944    3078   57729  10699    100.0    1.277  ! Near Maximum !
+00.0   90    61.50   2969    3131   59368  10757    100.0    1.261  ! Near Maximum !
+01.0   91    62.12   2994    3184   61050  10812    100.0    1.245  !DANGEROUS LOAD-DO NOT USE!
+02.0   92    62.73   3018    3237   62778  10865    100.0    1.230  !DANGEROUS LOAD-DO NOT USE!
+03.0   93    63.35   3043    3290   64552  10917    100.0    1.214  !DANGEROUS LOAD-DO NOT USE!
+04.0   94    63.96   3068    3343   66374  10969    100.0    1.199  !DANGEROUS LOAD-DO NOT USE!
+05.0   95    64.58   3092    3396   68246  11020    100.0    1.185  !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     90    61.50   3063    3332   68754  10406    100.0    1.183  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     90    61.50   2831    2847   49955  10869     97.6    1.363



Cartridge          : 7 mm Rem. Mag.(SAAMI)
Bullet             : .284, 160, Nosler AccuBond 54932
Useable Case Capaci: 72.296 grain H2O = 4.694 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 mm
Barrel Length      : 26.0 inch = 660.4 mm
Powder             : IMR 4350

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   82    54.27   2701    2591   44528   9764     98.6    1.443
-09.0   83    54.87   2727    2641   45824   9854     98.9    1.423
-08.0   84    55.48   2753    2692   47155   9940     99.1    1.404
-07.0   85    56.08   2779    2743   48521  10023     99.3    1.386
-06.0   86    56.68   2804    2794   49923  10103     99.4    1.367
-05.0   86    57.29   2830    2846   51363  10180     99.6    1.350
-04.0   87    57.89   2856    2897   52841  10252     99.7    1.332  ! Near Maximum !
-03.0   88    58.49   2881    2949   54359  10322     99.8    1.315  ! Near Maximum !
-02.0   89    59.09   2907    3001   55918  10388     99.9    1.298  ! Near Maximum !
-01.0   90    59.70   2932    3054   57518  10450     99.9    1.281  ! Near Maximum !
+00.0   91    60.30   2957    3106   59162  10508    100.0    1.265  ! Near Maximum !
+01.0   92    60.90   2982    3159   60851  10563    100.0    1.249  !DANGEROUS LOAD-DO NOT USE!
+02.0   93    61.51   3007    3212   62585  10614    100.0    1.233  !DANGEROUS LOAD-DO NOT USE!
+03.0   94    62.11   3031    3265   64367  10664    100.0    1.218  !DANGEROUS LOAD-DO NOT USE!
+04.0   95    62.71   3056    3318   66198  10713    100.0    1.203  !DANGEROUS LOAD-DO NOT USE!
+05.0   96    63.32   3080    3371   68080  10762    100.0    1.188  !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     91    60.30   3052    3309   68610  10157    100.0    1.187  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     91    60.30   2818    2820   49712  10596     97.4    1.368

AzDak42 · Jun 25, 2018

This is one of those cases where there is no bad answer in those choices.

I tend to use H1000 more, just because i think it's more temperature insensitive.

Divernhunter · Jun 25, 2018

I tried a lot of different bullets and weights.
Settled on the Nosler 140gr PAR and IMR4350 or RL19 or RL22. Never lost another animal. The heavier bullet sometimes just penciled thru.
Friends in Montana and Wy also use the 140 for everything including elk.