338 Win Mag

[SJB358]

Since I was finally able to get some 225gr Accubonds, and have some R19 on the bench, what are some of your loads for the 338 Win Mag? There is a big difference between the Nosler #6 of 72.5 and the Alliant/Speer Data of 78gr of powder. I would like to get as close as I can to full power loads as I can. I have a BOSS on the rifle, so I can tweak about any load to max accuracy. Does 78gr's seems out of line for a 338 Win Mag with a 225? They have it listed over 2900 with a Speer bullet. I cannot wait to try these out. I bet they will be hammers. I might have to give it a whirl on some deer this year if they work out well. Scotty

 

[Richracer1]

Since I was finally able to get some 225gr Accubonds, and have some R19 on the bench, what are some of your loads for the 338 Win Mag? There is a big difference between the Nosler #6 of 72.5 and the Alliant/Speer Data of 78gr of powder. I would like to get as close as I can to full power loads as I can. I have a BOSS on the rifle, so I can tweak about any load to max accuracy. Does 78gr's seems out of line for a 338 Win Mag with a 225? They have it listed over 2900 with a Speer bullet. I cannot wait to try these out. I bet they will be hammers. I might have to give it a whirl on some deer this year if they work out well. Scotty

Actually, Nosler #6 shows 74gn of RL-19 as max and most accurate load/charge. I have a Browning BOSS 338WM as well, and settled on 73.gn of RL-19. Velocity is around 2784.

 

[Antelope_Sniper]

My load with the 225 ab is 71.5gr of H4350, WMPR and a Win case.
Shoots .75 Moa.

 

[jmad_81]

I'm in the same boat with ya. just making the switch from 225 TSX back to 225 AB, got a pound of RL-19 and some IMR 4350 just sitting around waiting for some bullets to get here! looking to get 2850 or better out of a 26" tube.

 

[Antelope_Sniper]

I was getting 2900 out of my 26" tube with a heavier charge of H4350, but my groups opened up. It's seems to like this level a little better.

 

[jmad_81]

I was getting an average of 2906 and five shot 1" groups with the 225 TSX with 73.5 gr of RL-19. The closer I can get to that the better. If not the BC advantage of the 225 AB at 2850 will pass what I was getting out of the TSX in a few hundred yards.

Is there any real difference between H 4350 and IMR 4350?

 

[jmad_81]

Cartridge : .338 Win Mag.
Bullet : .338, 225, Nosler AccuBond 54357
Useable Case Capaci: 72.506 grain H2O = 4.708 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : Alliant Reloder-19

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 58.40 2328 2707 32396 7422 89.4 1.617
-18.0 90 59.86 2386 2844 34638 7659 90.7 1.572
-16.0 92 61.32 2445 2986 37027 7888 91.9 1.529
-14.0 94 62.78 2503 3131 39618 8108 93.0 1.481
-12.0 96 64.24 2562 3280 42383 8320 94.1 1.436
-10.0 98 65.70 2621 3432 45353 8521 95.0 1.392
-08.0 100 67.16 2680 3589 48548 8710 95.9 1.350
-06.0 103 68.62 2739 3748 51988 8888 96.7 1.309
-04.0 105 70.08 2798 3912 55695 9053 97.5 1.270 ! Near Maximum !
-02.0 107 71.54 2857 4078 59695 9203 98.1 1.231 ! Near Maximum !
+00.0 109 73.00 2916 4248 64019 9339 98.6 1.195 !DANGEROUS LOAD-DO NOT USE!
+02.0 111 74.45 2975 4421 68699 9459 99.1 1.159 !DANGEROUS LOAD-DO NOT USE!
+04.0 114 75.91 3033 4597 73776 9563 99.5 1.125 !DANGEROUS LOAD-DO NOT USE!
+06.0 116 77.37 3092 4776 79286 9649 99.7 1.092 !DANGEROUS LOAD-DO NOT USE!
+08.0 118 78.83 3150 4957 85284 9716 99.9 1.060 !DANGEROUS LOAD-DO NOT USE!
+10.0 120 80.29 3208 5142 91789 9765 100.0 1.029 !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge

Cartridge : .338 Win Mag.
Bullet : .338, 225, Nosler AccuBond 54357
Useable Case Capaci: 72.506 grain H2O = 4.708 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 mm
Barrel Length : 26.0 inch = 660.4 mm
Powder : Hodgdon H4350

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 84 56.00 2372 2811 33487 7512 94.3 1.590
-18.0 86 57.40 2430 2950 35815 7719 95.4 1.546
-16.0 88 58.80 2488 3092 38309 7914 96.3 1.500
-14.0 91 60.20 2546 3238 40984 8097 97.1 1.453
-12.0 93 61.60 2603 3386 43853 8267 97.8 1.409
-10.0 95 63.00 2661 3537 46936 8423 98.5 1.366
-08.0 97 64.40 2718 3690 50252 8564 99.0 1.325
-06.0 99 65.80 2775 3847 53818 8690 99.4 1.286 ! Near Maximum !
-04.0 101 67.20 2831 4005 57663 8799 99.7 1.247 ! Near Maximum !
-02.0 103 68.60 2888 4166 61809 8891 99.9 1.211 !DANGEROUS LOAD-DO NOT USE!
+00.0 105 70.00 2943 4329 66293 8965 100.0 1.175 !DANGEROUS LOAD-DO NOT USE!
+02.0 107 71.40 2999 4493 71141 9024 100.0 1.141 !DANGEROUS LOAD-DO NOT USE!
+04.0 110 72.80 3054 4660 76399 9078 100.0 1.108 !DANGEROUS LOAD-DO NOT USE!
+06.0 112 74.20 3109 4828 82109 9128 100.0 1.076 !DANGEROUS LOAD-DO NOT USE!
+08.0 114 75.60 3163 4999 88302 9175 100.0 1.045 !DANGEROUS LOAD-DO NOT USE!
+10.0 116 77.00 3217 5172 95022 9217 100.0 1.015 !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge

Cartridge : .338 Win Mag.
Bullet : .338, 225, Nosler AccuBond 54357
Useable Case Capaci: 72.506 grain H2O = 4.708 cm³
Cartridge O.A.L. L6: 3.340 inch = 84.84 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 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 56.00 2398 2872 35175 7514 94.1 1.566
-18.0 90 57.40 2455 3011 37611 7716 95.1 1.521
-16.0 92 58.80 2512 3153 40224 7909 96.0 1.474
-14.0 94 60.20 2569 3298 43022 8090 96.8 1.430
-12.0 96 61.60 2626 3446 46017 8259 97.6 1.387
-10.0 98 63.00 2683 3596 49232 8415 98.2 1.345
-08.0 101 64.40 2739 3749 52682 8558 98.7 1.306
-06.0 103 65.80 2795 3904 56389 8687 99.2 1.267 ! Near Maximum !
-04.0 105 67.20 2851 4061 60350 8800 99.5 1.231 ! Near Maximum !
-02.0 107 68.60 2907 4221 64586 8898 99.8 1.195 !DANGEROUS LOAD-DO NOT USE!
+00.0 109 70.00 2962 4383 69137 8979 99.9 1.161 !DANGEROUS LOAD-DO NOT USE!
+02.0 112 71.40 3016 4546 74033 9043 100.0 1.128 !DANGEROUS LOAD-DO NOT USE!
+04.0 114 72.80 3071 4711 79307 9096 100.0 1.097 !DANGEROUS LOAD-DO NOT USE!
+06.0 116 74.20 3125 4877 84997 9144 100.0 1.066 !DANGEROUS LOAD-DO NOT USE!
+08.0 118 75.60 3178 5046 91146 9189 100.0 1.037 !DANGEROUS LOAD-DO NOT USE!
+10.0 120 77.00 3231 5216 97803 9230 100.0 1.008 !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge

Just a for refrence. Looks like 2900 could be reached but will take some working up. Ultimately it will come down to how they shoot. My bullets should be here next week. I'll start getting some loads worked up and keep you guys posted. Let me know how you do and what works for you.

 

[Antelope_Sniper]

Thanks for the QL Jmad....This is a case where my gun and chronograph are saying something a little different. I sure wish I was getting 3000 with that load!

 

[Antelope_Sniper]

71.5grs is giving me 2850, but my rifle probably has a loose chamber and a long throat.

 

[matts318]

According to hdgdon's web page the burn rates are identical but when looking up their load data it showed a 2.5gr. difference in the max loads for the same 225gr. bullet.

 

[Antelope_Sniper]

In my experience, the IMR 4350 is a little faster.

 

[matts318]

I was just trying to be short, it does show that the IMR 4350 is a tad faster but H4350 is right below it on the burn chart, he had asked if there was any real difference between the two and was just trying to say that they are very close to the same.

 

[.405]

IMR 4831 and Rel 19 both seem to be really good powders for the .338 win mag.

 

[SJB358]

Actually, Nosler #6 shows 74gn of RL-19 as max and most accurate load/charge. I have a Browning BOSS 338WM as well, and settled on 73.gn of RL-19. Velocity is around 2784.[/quote]

I apologize, I looked on the load data listed on the Nosler Data web page. My manuals are still in NC and I am in Va. I will check them out. Thanks for the load. That is plenty fast enough for me. Scotty

 

[SJB358]

Thanks for all of the loads guys. I am looking forward to getting my 339 loads kicked off. I cannot wait to get this rifle shooting. I have never handloaded for it, so I am looking forward to it. It will be my long range hammer (maybe for elk this year). Scotty

 

[.405]

The .338 win is a great caliber.I want to dig my old Sako out and try some of these new bullets.The Nosler 200 grain E tip looks like a promising choice.

 

[SJB358]

Heck yeah! E Tip's in 225 grainers would be an awesome combo. Plus they would have to penetrate into next week. Scotty

 

[GooseHunter Jr]

I am using the RL-19 and the 225 gr AB and I use 71.5 grains of powder and I get excellent results from my Ruger!!

 

[Huntbear]

I am using 210 gr. Partitions. 75.6 grains of RL 19, getting half inch groups out of my .338 all day long.

 

[JD338]

I am using 210 gr. Partitions. 75.6 grains of RL 19, getting half inch groups out of my .338 all day long.

Huntbear

Welcome to the forum, glad you found us here.
The 210 gr PT is an awesome bullet, one that penetrates much deeper that most would think. Sounds like you have a great load in your 338 Win Mag.

JD338