I have a custom 7wsm with 26" barrel. I can load rounds out to 3.05". Have been shooting the 168 ABLR with retumbo and RL 25. I have some viht n570, and I have norma 217 and RL 33 coming Monday. Does anybody have data for viht n570, norma 217 or RL 33? Don't really know where to start with these, any help would be appreciated.
7mm WSM 168 accubond long range
- Thread starter bigd7378
- Start date
I have been using RL25 with the 168's in my 7mm WSM as well..
Here is a profile using the 168 Sierra.. Should give you a place to start with.
Cartridge : 7 mm WSM
Bullet : .284, 168, Sierra HPBT MatchK 1930
Useable Case Capaci: 72.650 grain H2O = 4.717 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : Alliant Reloder 33
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 85 62.40 2386 2123 28356 10393 84.9 1.793
-18.0 87 63.96 2457 2251 30505 10806 86.8 1.742
-16.0 89 65.52 2529 2385 32838 11207 88.5 1.692
-14.0 91 67.08 2601 2524 35376 11594 90.2 1.643
-12.0 93 68.64 2675 2669 38140 11963 91.7 1.589
-10.0 95 70.20 2749 2819 41152 12313 93.2 1.533
-08.0 98 71.76 2823 2974 44443 12640 94.5 1.478
-06.0 100 73.32 2899 3134 48043 12942 95.7 1.424
-04.0 102 74.88 2974 3299 51989 13216 96.8 1.373
-02.0 104 76.44 3050 3469 56322 13459 97.7 1.323 ! Near Maximum !
+00.0 106 78.00 3126 3644 61093 13669 98.5 1.275 ! Near Maximum !
+02.0 108 79.56 3202 3824 66357 13843 99.1 1.229 !DANGEROUS LOAD-DO NOT USE!
+04.0 110 81.12 3278 4007 72182 13979 99.6 1.184 !DANGEROUS LOAD-DO NOT USE!
+06.0 112 82.68 3354 4195 78601 14075 99.9 1.140 !DANGEROUS LOAD-DO NOT USE!
+08.0 114 84.24 3430 4387 85696 14128 100.0 1.098 !DANGEROUS LOAD-DO NOT USE!
+10.0 117 85.80 3505 4583 93568 14145 100.0 1.058 !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 78.00 3308 4083 77546 13226 100.0 1.159 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 106 78.00 2871 3075 47291 13117 90.9 1.426
Cartridge : 7 mm WSM
Bullet : .284, 168, Sierra HPBT MatchK 1930
Useable Case Capaci: 72.650 grain H2O = 4.717 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : Vihtavuori N570
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 85 60.00 2414 2175 29123 10532 84.5 1.770
-18.0 87 61.50 2484 2302 31266 10944 86.2 1.722
-16.0 89 63.00 2555 2435 33585 11345 87.9 1.674
-14.0 91 64.50 2626 2573 36093 11733 89.6 1.627
-12.0 93 66.00 2698 2715 38810 12105 91.1 1.573
-10.0 96 67.50 2770 2863 41757 12460 92.5 1.519
-08.0 98 69.00 2843 3015 44956 12794 93.8 1.467
-06.0 100 70.50 2916 3172 48434 13106 95.0 1.416
-04.0 102 72.00 2989 3333 52221 13393 96.1 1.368
-02.0 104 73.50 3063 3499 56352 13653 97.1 1.320 ! Near Maximum !
+00.0 106 75.00 3136 3670 60866 13883 97.9 1.275 ! Near Maximum !
+02.0 108 76.50 3210 3844 65804 14082 98.6 1.231 !DANGEROUS LOAD-DO NOT USE!
+04.0 110 78.00 3284 4022 71217 14247 99.2 1.188 !DANGEROUS LOAD-DO NOT USE!
+06.0 113 79.50 3357 4204 77116 14376 99.6 1.147 !DANGEROUS LOAD-DO NOT USE!
+08.0 115 81.00 3430 4390 83572 14468 99.9 1.108 !DANGEROUS LOAD-DO NOT USE!
+10.0 117 82.50 3503 4578 90657 14520 100.0 1.069 !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 75.00 3320 4111 76623 13523 100.0 1.161 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 106 75.00 2885 3106 47420 13258 90.0 1.423
I don't have N217 data though..
Here is a profile using the 168 Sierra.. Should give you a place to start with.
Cartridge : 7 mm WSM
Bullet : .284, 168, Sierra HPBT MatchK 1930
Useable Case Capaci: 72.650 grain H2O = 4.717 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : Alliant Reloder 33
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 85 62.40 2386 2123 28356 10393 84.9 1.793
-18.0 87 63.96 2457 2251 30505 10806 86.8 1.742
-16.0 89 65.52 2529 2385 32838 11207 88.5 1.692
-14.0 91 67.08 2601 2524 35376 11594 90.2 1.643
-12.0 93 68.64 2675 2669 38140 11963 91.7 1.589
-10.0 95 70.20 2749 2819 41152 12313 93.2 1.533
-08.0 98 71.76 2823 2974 44443 12640 94.5 1.478
-06.0 100 73.32 2899 3134 48043 12942 95.7 1.424
-04.0 102 74.88 2974 3299 51989 13216 96.8 1.373
-02.0 104 76.44 3050 3469 56322 13459 97.7 1.323 ! Near Maximum !
+00.0 106 78.00 3126 3644 61093 13669 98.5 1.275 ! Near Maximum !
+02.0 108 79.56 3202 3824 66357 13843 99.1 1.229 !DANGEROUS LOAD-DO NOT USE!
+04.0 110 81.12 3278 4007 72182 13979 99.6 1.184 !DANGEROUS LOAD-DO NOT USE!
+06.0 112 82.68 3354 4195 78601 14075 99.9 1.140 !DANGEROUS LOAD-DO NOT USE!
+08.0 114 84.24 3430 4387 85696 14128 100.0 1.098 !DANGEROUS LOAD-DO NOT USE!
+10.0 117 85.80 3505 4583 93568 14145 100.0 1.058 !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 78.00 3308 4083 77546 13226 100.0 1.159 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 106 78.00 2871 3075 47291 13117 90.9 1.426
Cartridge : 7 mm WSM
Bullet : .284, 168, Sierra HPBT MatchK 1930
Useable Case Capaci: 72.650 grain H2O = 4.717 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : Vihtavuori N570
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 85 60.00 2414 2175 29123 10532 84.5 1.770
-18.0 87 61.50 2484 2302 31266 10944 86.2 1.722
-16.0 89 63.00 2555 2435 33585 11345 87.9 1.674
-14.0 91 64.50 2626 2573 36093 11733 89.6 1.627
-12.0 93 66.00 2698 2715 38810 12105 91.1 1.573
-10.0 96 67.50 2770 2863 41757 12460 92.5 1.519
-08.0 98 69.00 2843 3015 44956 12794 93.8 1.467
-06.0 100 70.50 2916 3172 48434 13106 95.0 1.416
-04.0 102 72.00 2989 3333 52221 13393 96.1 1.368
-02.0 104 73.50 3063 3499 56352 13653 97.1 1.320 ! Near Maximum !
+00.0 106 75.00 3136 3670 60866 13883 97.9 1.275 ! Near Maximum !
+02.0 108 76.50 3210 3844 65804 14082 98.6 1.231 !DANGEROUS LOAD-DO NOT USE!
+04.0 110 78.00 3284 4022 71217 14247 99.2 1.188 !DANGEROUS LOAD-DO NOT USE!
+06.0 113 79.50 3357 4204 77116 14376 99.6 1.147 !DANGEROUS LOAD-DO NOT USE!
+08.0 115 81.00 3430 4390 83572 14468 99.9 1.108 !DANGEROUS LOAD-DO NOT USE!
+10.0 117 82.50 3503 4578 90657 14520 100.0 1.069 !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 75.00 3320 4111 76623 13523 100.0 1.161 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 106 75.00 2885 3106 47420 13258 90.0 1.423
I don't have N217 data though..
DrMike
Ballistician
- Nov 8, 2006
- 36,935
- 5,129
I've certainly had considerable success across a variety of firing systems with N570 as propellant. It works very well for me.
- Thread starter
- #4
I think I am using 71 grains of RL25 in my loads right now. Same deal, getting excellent accuracy with them. Still not sure if I am done tweaking the load, but it did hold MOA or a little better shooting out to 600 a few weekends ago. Might hit it again later in the year or early next year. Too much hunting to do right now.
I am also using WW cases, CCI250's for primers.
I know that data won't be exact, but it should give you a place to work from. RL25 seems really good in the 7mm WSM though. I have been very happy with it.
I am also using WW cases, CCI250's for primers.
I know that data won't be exact, but it should give you a place to work from. RL25 seems really good in the 7mm WSM though. I have been very happy with it.
