168gr LRAB and 7mm WSM loads

[DrMike]

Start at 10% below maximum charge (read to the first decimal point) and work up to the maximum charge. Reading to hundredths will not alter your data nor lead you into dangerous territory. One tenth of a grain is as fine as most scales read. It will alter the velocity by as little as one or two feet per second, which is inconsequential.

 

[officerdare]

Start at 10% below maximum charge (read to the first decimal point) and work up to the maximum charge. Reading to hundredths will not alter your data nor lead you into dangerous territory. One tenth of a grain is as fine as most scales read. It will alter the velocity by as little as one or two feet per second, which is inconsequential.

So would that be the listing on the loads for the first load that lists “near maximum”.

 

[DrMike]

Cartridge : 7 mm Rem. Mag.(SAAMI)
Bullet : .284, 168, Nosler AccuBond LR 58623 G7
Useable Case Capaci: 71.501 grain H2O = 4.643 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 2.0% 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

-20.0 77 52.00 2350 2060 30799 10450 90.2 1.638
-18.0 79 53.30 2410 2167 32873 10799 91.5 1.597
-16.0 81 54.60 2471 2278 35089 11136 92.8 1.556
-14.0 83 55.90 2532 2391 37456 11459 94.0 1.513
-12.0 84 57.20 2593 2508 39989 11767 95.1 1.465
-10.0 86 58.50 2654 2627 42698 12058 96.0 1.420
-08.0 88 59.80 2715 2749 45597 12331 96.9 1.377
-06.0 90 61.10 2776 2874 48704 12584 97.7 1.335
-04.0 92 62.40 2836 3001 52035 12815 98.4 1.294 ! Near Maximum !
-02.0 94 63.70 2897 3131 55609 13024 98.9 1.255 ! Near Maximum !
+00.0 96 65.00 2957 3262 59447 13209 99.4 1.217 ! Near Maximum !
+02.0 98 66.30 3017 3396 63574 13368 99.7 1.181 !DANGEROUS LOAD-DO NOT USE!
+04.0 100 67.60 3077 3532 68015 13501 99.9 1.146 !DANGEROUS LOAD-DO NOT USE!
+06.0 102 68.90 3136 3669 72797 13606 100.0 1.112 !DANGEROUS LOAD-DO NOT USE!
+08.0 104 70.20 3195 3809 77918 13687 100.0 1.079 !DANGEROUS LOAD-DO NOT USE!
+10.0 106 71.50 3254 3949 83426 13763 100.0 1.047 !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 65.00 3092 3567 72132 12736 100.0 1.124 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 96 65.00 2766 2854 48013 12961 94.0 1.338

The load coloured in red is to be considered your maximum charge.

 

[officerdare]

Thanks. I had looked at the 0.0 but wasn’t sure and in my ole age, I’ve learned to ask instead of forging ahead. Not familiar with that program and have always relied upon the different bullet manufacturers books to develop loads. This will make it easier.

 

[DrMike]

QL is an excellent programme, but safety is still the responsibility of the hand loader. Always initiate tests at a safe charge and work up, watching for pressure. Use the coolest primer possible is another good practise.

 

[mkcj]

I'm not sure if the 7mm 168gr ABLR are hard to come by? I seen a box of them at a small shop I go to and was supprised to see them on the shelf.

 

[Oldtrader3]

I bought 3 boxes of loaded 168 7mm Rem Mag ABLR from Midway loaded in factory Nosler cases. They are available occasionally.

 

[pharmseller]

I found a load for my brother's Tikka 7mag using Retumbo (73.0 grains, safe in my rifle, work up in yours) and 168 NABLR, really close to 3k MV and great accuracy.



P

 

[officerdare]

Using the DrMike data, I tried the H4831sc powder and was getting 1 - 1 1/4” groups consistently. Tried the RL22 and got .613 and a .746 groups using 61.0 and 61.5g loads respectively. Will fine tune a little bit more using different primers and maybe seating, but this looks really good. Can’t set up a chronograph but looks like the velocities are in the 2700 - 2800 range which should be good enough for elk.

 

[DrMike]

Glad the data is working for you. 2700+ fps will be more than adequate for elk with that bullet. I launched the 150 grain ABLR from my .280 to take a fine elk and a mule deer last fall. You may actually be generating more velocity than you think, however.