300 WSM - What's the best bullet ?

[jagermeister]

The saga goes on....... :wink:

For the moment I am working up loads with Vihtavuori N160 powder and the following bullets :

- Hornady 178 grs. A-Max
- Hornady 180 grs. BTSP Interlock
- Nosler 150 grs. BT
- Nosler 180 grs. BT

Is there Anyone who could run QL for the A-Max, please ?



TY

 

[DrMike]

The saga goes on....... :wink:

For the moment I am working up loads with Vihtavuori N160 powder and the following bullets :

- Hornady 178 grs. A-Max
- Hornady 180 grs. BTSP Interlock
- Nosler 150 grs. BT
- Nosler 180 grs. BT

Is there Anyone who could run QL for the A-Max, please ?



TY

Try this.

Cartridge : .300 WSM (CIP)
Bullet : .308, 178, Hornady A-MAX 30712
Useable Case Capaci: 72.845 grain H2O = 4.730 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Vihtavuori N160

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 87 55.92 2352 2186 32016 8330 87.9 1.547
-18.0 89 57.32 2410 2296 34190 8603 89.1 1.507
-16.0 91 58.72 2469 2409 36532 8868 90.4 1.468
-14.0 93 60.11 2528 2525 39028 9126 91.5 1.425
-12.0 96 61.51 2587 2644 41701 9375 92.6 1.381
-10.0 98 62.91 2646 2767 44563 9614 93.7 1.339
-08.0 100 64.31 2705 2892 47606 9843 94.6 1.299
-06.0 102 65.71 2764 3020 50848 10061 95.5 1.260
-04.0 104 67.10 2823 3151 54322 10266 96.3 1.223 ! Near Maximum !
-02.0 106 68.50 2883 3285 58048 10457 97.1 1.186 ! Near Maximum !
+00.0 109 69.90 2942 3421 62050 10633 97.7 1.151 ! Near Maximum !
+02.0 111 71.30 3001 3560 66351 10794 98.3 1.118 !DANGEROUS LOAD-DO NOT USE!
+04.0 113 72.70 3061 3702 70980 10939 98.8 1.085 !DANGEROUS LOAD-DO NOT USE!
+06.0 115 74.09 3120 3847 75971 11065 99.2 1.053 !DANGEROUS LOAD-DO NOT USE!
+08.0 117 75.49 3179 3994 81359 11174 99.6 1.023 !DANGEROUS LOAD-DO NOT USE!
+10.0 119 76.89 3238 4143 87186 11262 99.8 0.993 !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 109 69.90 3073 3733 73389 10490 100.0 1.072 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 109 69.90 2767 3027 50980 10278 91.7 1.255

 

[big rifle man]

I'm curious as to why no one has mentioned or tried Re17 with 180 grainers. I recently used it and with 64 grains (2 grains under max) I was able to get 3180FPS with 1 1/2 inch groups at 200 yards. Seems like it would be worth a try.

 

[jagermeister]

Thanks Doc !

Precise and swift as usual :wink:

I will give it a try....

Btw, impressive results on run-out on the resized brass (Winchester).

From once-fired brass and RCBS standard FL Dies, on 25 cases, I've got n.2 cases running on 2/100 and the rest staying within 1/100 with some very close to 0/100 (measured at the neck on empty case).

And I am talking 0,01 millimeters run-out, which should equal to 0,0004 inch.

:shock:

OK, after seating it might be a different story, but still......

 

[wildgene]

I'm curious as to why no one has mentioned or tried Re17 with 180 grainers. I recently used it and with 64 grains (2 grains under max) I was able to get 3180FPS with 1 1/2 inch groups at 200 yards. Seems like it would be worth a try.

...I'm using 66grs. of RL-17 w/ the 180's (NAB's, GrandSlams, HotCors, Sierras) avg. MV of 3082fps/ 3/4MOA. I/ve had the best accuracy w/ RL-17 @ Max/ Near Max loads. Case fill is around 100%, I like 95-100%, willing to go to maybe 105% above that I generally start looking for another powder, there's lots of options out there, I've never found it necessary to try & cram 120% into a case...

 

[big rifle man]

Mistake on the velocity guys, It should have read 3080.

 

[SJB358]

Anybody ever tried RL17 with 200's?

 

[BK]

Just a random thought... has anybody had any success getting ABs and BTs to shoot to same POI? (180 gr...) thinking about (relatively) cheap practice...

 

[SJB358]

Kurt, I think it could be done, probably not the same die settings though. I did get lucky and my 264 Win Mag prints to the same point with the 140 BT and AB with the exact same load and die settings. I think I was more lucky than good with that load though.