Looking for data on 175 gr. Partition & RL26 (7mm Rem Mag)

[friarmeier]

Hello Nosler friends! New to the forum - you may know me from AR.

I'm planning my 2nd Moose hunt for NW Ontario this September - 1st hunt was 2008, so it's something I've looked forward to for some time.

I'll be shooting 175gr. partitions out of my 7mm Rem Mag, and I'm looking for data on that bullet with RL26. I also have RL22, RL 23, & IMR 7828SSC on hand.

I've found it difficult to search within the forum, so if there's a thread on this topic, generally, please don't hesitate to point me to it

Thanks so much - and P.S. Thanks Nosler for the new .277 150gr. Accubonds!!!

friar

 

[gerry]

Welcome to the forum. I'm not currently loading for a 7 mm RM but you are on the right track when it comes to powder's every one of them would be a great choice. The 175 gr PT will be excellent for moose, lots of them fall here to loads like that. I'm looking forward to the 277 150 gr AB as well!

 

[friarmeier]

Good morning Gerry - great picture in your avatar! I shot a young bull like that in '08, and it was, unquestionably, the best venison I've ever eaten - as good as the best Nebraska beef, I might add. Hoping to do the same this fall.

 

[gerry]

Pretty tough to beat moose meat, wishing you all the best this fall. Hope to do that myself this fall too :lol:

 

[Guy Miner]

Some years back I put a 175 gr Nosler Partition through a nice 6x6 bull elk at about 180 yards, with my 7mm Rem Mag. The bullet killed that big bull quickly, he only took a few steps.

Never tried RE-26 in it though. Should work great! Perhaps one of our ballistic gurus with Quickload will be along soon to provide some guidance.

Best of luck on the moose hunt!

Regards, Guy

 

[DrMike]

Welcome aboard. Yeah, moose hunting can be addictive. As for dining fare, it is superb. I do love moose as table fare.

Cartridge          : 7 mm Rem. Mag.(SAAMI)
Bullet             : .284, 175, Nosler PART SP 35645
Useable Case Capaci: 72.874 grain H2O = 4.732 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Alliant Reloder-26

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   83    60.12   2639    2705   42378  12473    100.0    1.482
-09.0   84    60.79   2667    2765   43863  12547    100.0    1.458
-08.0   85    61.46   2696    2825   45392  12616    100.0    1.435
-07.0   86    62.12   2725    2885   46972  12684    100.0    1.413
-06.0   87    62.79   2753    2945   48603  12751    100.0    1.390
-05.0   88    63.46   2781    3006   50289  12818    100.0    1.368
-04.0   89    64.13   2809    3067   52031  12884    100.0    1.347  ! Near Maximum !
-03.0   90    64.80   2837    3128   53832  12948    100.0    1.326  ! Near Maximum !
-02.0   91    65.46   2865    3190   55693  13012    100.0    1.305  ! Near Maximum !
-01.0   92    66.13   2893    3252   57617  13075    100.0    1.285  ! Near Maximum !
+00.0   92    66.80   2920    3314   59606  13137    100.0    1.265  ! Near Maximum !
+01.0   93    67.47   2948    3377   61663  13197    100.0    1.246  !DANGEROUS LOAD-DO NOT USE!
+02.0   94    68.14   2975    3439   63790  13257    100.0    1.227  !DANGEROUS LOAD-DO NOT USE!
+03.0   95    68.80   3002    3503   65990  13316    100.0    1.209  !DANGEROUS LOAD-DO NOT USE!
+04.0   96    69.47   3029    3566   68267  13374    100.0    1.190  !DANGEROUS LOAD-DO NOT USE!
+05.0   97    70.14   3056    3630   70623  13430    100.0    1.172  !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     92    66.80   3032    3573   73601  12662    100.0    1.162  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     92    66.80   2747    2933   46006  13726     99.4    1.408

Cartridge          : 7 mm Rem. Mag.(SAAMI)
Bullet             : .284, 175, Nosler PART SP 35645
Useable Case Capaci: 72.874 grain H2O = 4.732 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Alliant Reloder-23

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   88    57.78   2589    2605   43315  11171    100.0    1.467
-09.0   89    58.42   2615    2657   44728  11241    100.0    1.445
-08.0   90    59.06   2640    2709   46184  11310    100.0    1.424
-07.0   91    59.71   2666    2761   47685  11379    100.0    1.403
-06.0   92    60.35   2691    2814   49230  11447    100.0    1.382
-05.0   93    60.99   2716    2867   50823  11514    100.0    1.362
-04.0   94    61.63   2741    2920   52464  11580    100.0    1.342  ! Near Maximum !
-03.0   95    62.27   2766    2973   54156  11646    100.0    1.323  ! Near Maximum !
-02.0   96    62.92   2791    3027   55899  11711    100.0    1.304  ! Near Maximum !
-01.0   97    63.56   2816    3081   57696  11775    100.0    1.285  ! Near Maximum !
+00.0   98    64.20   2840    3135   59548  11838    100.0    1.267  ! Near Maximum !
+01.0   99    64.84   2865    3189   61458  11901    100.0    1.249  !DANGEROUS LOAD-DO NOT USE!
+02.0  100    65.48   2889    3244   63427  11963    100.0    1.232  !DANGEROUS LOAD-DO NOT USE!
+03.0  101    66.13   2914    3299   65458  12023    100.0    1.214  !DANGEROUS LOAD-DO NOT USE!
+04.0  102    66.77   2938    3354   67553  12083    100.0    1.197  !DANGEROUS LOAD-DO NOT USE!
+05.0  103    67.41   2962    3410   69714  12143    100.0    1.181  !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     98    64.20   2930    3336   71757  11480    100.0    1.175  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     98    64.20   2704    2841   47314  12359    100.0    1.393

Cartridge          : 7 mm Rem. Mag.(SAAMI)
Bullet             : .284, 175, Nosler PART SP 35645
Useable Case Capaci: 72.874 grain H2O = 4.732 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Alliant Reloder-22

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   86    58.41   2607    2641   43382  12194     98.0    1.457
-09.0   87    59.06   2635    2699   44777  12318     98.3    1.435
-08.0   88    59.71   2664    2757   46215  12438     98.6    1.413
-07.0   89    60.36   2692    2815   47697  12552     98.9    1.393
-06.0   90    61.01   2720    2875   49224  12661     99.1    1.372
-05.0   91    61.66   2748    2934   50799  12766     99.3    1.352
-04.0   92    62.30   2776    2994   52422  12864     99.5    1.332  ! Near Maximum !
-03.0   93    62.95   2804    3055   54096  12957     99.7    1.313  ! Near Maximum !
-02.0   94    63.60   2832    3115   55821  13045     99.8    1.293  ! Near Maximum !
-01.0   95    64.25   2859    3177   57601  13126     99.9    1.275  ! Near Maximum !
+00.0   96    64.90   2887    3238   59436  13202     99.9    1.256  ! Near Maximum !
+01.0   97    65.55   2914    3300   61329  13272    100.0    1.238  !DANGEROUS LOAD-DO NOT USE!
+02.0   97    66.20   2942    3362   63282  13336    100.0    1.221  !DANGEROUS LOAD-DO NOT USE!
+03.0   98    66.85   2969    3425   65296  13396    100.0    1.203  !DANGEROUS LOAD-DO NOT USE!
+04.0   99    67.50   2996    3487   67376  13455    100.0    1.186  !DANGEROUS LOAD-DO NOT USE!
+05.0  100    68.15   3023    3550   69522  13513    100.0    1.169  !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     96    64.90   3003    3504   71190  12725    100.0    1.163  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     96    64.90   2716    2867   47841  13212     96.4    1.381

Cartridge          : 7 mm Rem. Mag.(SAAMI)
Bullet             : .284, 175, Nosler PART SP 35645
Useable Case Capaci: 72.874 grain H2O = 4.732 cm³
Cartridge O.A.L. L6: 3.290 inch = 83.57 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : IMR 7828 SSC

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   85    58.50   2609    2645   42718  12264     96.7    1.446
-09.0   86    59.15   2639    2705   44125  12401     97.1    1.423
-08.0   87    59.80   2668    2766   45579  12532     97.5    1.401
-07.0   88    60.45   2697    2828   47084  12659     97.8    1.380
-06.0   89    61.10   2727    2889   48639  12780     98.2    1.359
-05.0   89    61.75   2756    2952   50250  12896     98.5    1.339
-04.0   90    62.40   2785    3015   51899  13007     98.8    1.318  ! Near Maximum !
-03.0   91    63.05   2815    3078   53639  13111     99.0    1.299  ! Near Maximum !
-02.0   92    63.70   2844    3143   55422  13210     99.2    1.279  ! Near Maximum !
-01.0   93    64.35   2873    3207   57270  13303     99.4    1.260  ! Near Maximum !
+00.0   94    65.00   2902    3272   59182  13389     99.6    1.241  ! Near Maximum !
+01.0   95    65.65   2931    3338   61165  13469     99.7    1.223  !DANGEROUS LOAD-DO NOT USE!
+02.0   96    66.30   2960    3404   63216  13543     99.8    1.205  !DANGEROUS LOAD-DO NOT USE!
+03.0   97    66.95   2988    3470   65335  13610     99.9    1.187  !DANGEROUS LOAD-DO NOT USE!
+04.0   98    67.60   3017    3537   67520  13670    100.0    1.169  !DANGEROUS LOAD-DO NOT USE!
+05.0   99    68.25   3045    3604   69778  13724    100.0    1.152  !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     94    65.00   3029    3566   71564  12890    100.0    1.147  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     94    65.00   2719    2873   47759  13216     94.8    1.364

I've used the 7RM rather extensively on moose. I do like the 175 grain PT. The powders I've used are mostly no longer available (H870 and WXR), and the supply for these loads is being exhausted. However, I have excellent results with a charge of 61.5 grains of RL22. It produces sub-MOA groups with a velocity slightly greater than 2800 fps. I have us ed Magnum in the past, as well. A charge of 71.0 grains yielded a velocity of 2850 +/- 14 fps. To date, never had a moose walk away from being hit with a 175 grain bullet.

 

[friarmeier]

Dr. Mike & friends - bless you! Many thanks!

 

[SJB358]

I have used 22 and 7828 in the 7 Rem Mag with 175’s but haven’t ever tried 26. I have no doubt it’ll make good speed though. I bet it’ll trump just about everything else. Retumbo is another one that’ll work along with H1000.

The 175 Partition kicked out about 2900 or so really is a one load/cartridge for anything. You’d have to move way up in caliber to best it in my opinion. I think the 175’s are what separate the 7 mags from the 270/30-06 sorta ballistics.

 

[preacher]

Hello sir and welcome! The last 7mm Mag I worked with had a 26" barrel, but I wanted to try R26 (160) and R33 (175) I used Sierra 160 HPBT and the 175 SBT. I got an easy 3100 with the 160 and a tad over 3000fps with R33. I can't find my notes right now, but maybe the Good Dr or someone will run some numbers for you!? Good luck to you Pard!

 

[friarmeier]

Preacher & friends - thank you! I'll keep you up to date on my progress