wbymagloader4358
Beginner
- Jul 28, 2015
- 6
- 0
Can anyone tell me what the min and max loads would be for the 200 grain NP in a .300 Weatherby Mag?
Thank you
Thank you
Additional load data for 200 grain Nosler Partition (.308)
- Thread starter wbymagloader4358
- Start date
DrMike
Ballistician
- Nov 8, 2006
- 37,538
- 6,606
Check out the data listed by Nosler at the nosler.com site (http://www.nosler.com/nosler-load-data/300-weatherby-magnum/),
- Thread starter
- #3
wbymagloader4358
Beginner
- Jul 28, 2015
- 6
- 0
DrMike,
I have visited that link many times. Unfortunately, it does not list Norma MRP in conjunction with the 200 grain NP bullets. I believe this is the powder Weatherby uses in its factory loads.
I have visited that link many times. Unfortunately, it does not list Norma MRP in conjunction with the 200 grain NP bullets. I believe this is the powder Weatherby uses in its factory loads.
DrMike
Ballistician
- Nov 8, 2006
- 37,538
- 6,606
I would suppose that Norma is using a non-canister powder in its Weatherby loads. However, here is the intel with MRP as projected by QL.
There are a number of other powders to consider as you think of loading these bullets.
Code:
Cartridge : .300 Weath. Mag.
Bullet : .308, 200, Nosler PART SP 35626
Useable Case Capaci: 87.330 grain H2O = 5.670 cm³
Cartridge O.A.L. L6: 3.560 inch = 90.42 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Norma MRP
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 76 63.68 2390 2537 31915 11463 95.1 1.637
-18.0 78 65.27 2450 2666 34134 11794 96.1 1.597
-16.0 80 66.86 2510 2799 36511 12107 97.0 1.557
-14.0 81 68.46 2570 2934 39058 12399 97.9 1.508
-12.0 83 70.05 2630 3072 41764 12670 98.5 1.460
-10.0 85 71.64 2690 3213 44624 12916 99.1 1.415
-08.0 87 73.23 2749 3355 47666 13138 99.5 1.372
-06.0 89 74.82 2807 3500 50906 13334 99.8 1.330
-04.0 91 76.42 2866 3647 54358 13503 100.0 1.290 ! Near Maximum !
-02.0 93 78.01 2923 3795 58037 13643 100.0 1.251 ! Near Maximum !
+00.0 95 79.60 2980 3945 61961 13774 100.0 1.214 ! Near Maximum !
+02.0 97 81.19 3037 4096 66148 13900 100.0 1.178 !DANGEROUS LOAD-DO NOT USE!
+04.0 99 82.78 3093 4248 70619 14022 100.0 1.144 !DANGEROUS LOAD-DO NOT USE!
+06.0 100 84.38 3148 4402 75397 14141 100.0 1.111 !DANGEROUS LOAD-DO NOT USE!
+08.0 102 85.97 3204 4558 80509 14255 100.0 1.078 !DANGEROUS LOAD-DO NOT USE!
+10.0 104 87.56 3259 4716 85982 14364 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 95 79.60 3097 4259 74990 13282 100.0 1.120 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 95 79.60 2804 3492 49130 14053 97.9 1.340There are a number of other powders to consider as you think of loading these bullets.
Code:
Cartridge : .300 Weath. Mag.
Bullet : .308, 200, Nosler PART SP 35626
Useable Case Capaci: 87.330 grain H2O = 5.670 cm³
Cartridge O.A.L. L6: 3.560 inch = 90.42 mm
Barrel Length : 24.0 inch = 609.6 mm
Predicted Data for Indicated Charges of the Following Powders.
Matching Maximum Pressure: 63000 psi, or 434 MPa
or a maximum loading ratio or filling of 110 %
These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !
30 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.
Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
Vihtavuori N570 106.0 90.0 5.83 3072 97.7 63000 16022 1.193 ! Near Maximum !
Alliant Reloder-33 106.4 94.1 6.10 3060 98.0 63000 15834 1.193 ! Near Maximum !
Hodgdon Retumbo 109.8 88.9 5.76 3040 100.0 63000 14061 1.186 ! Near Maximum !
Norma MRP 2 105.1 84.6 5.48 3006 99.9 63000 14354 1.207 ! Near Maximum !
Alliant Reloder-26 94.0 81.4 5.27 3003 100.0 63000 13621 1.214 ! Near Maximum !
Vihtavuori N560 97.1 79.9 5.18 3003 99.5 63000 14385 1.196 ! Near Maximum !
Accurate MAGPRO 97.4 83.3 5.40 2998 98.8 63000 14564 1.204 ! Near Maximum !
Norma MRP 95.2 80.0 5.18 2995 100.0 63000 13806 1.205 ! Near Maximum !
IMR 7828 SSC 96.0 79.4 5.15 2994 99.8 63000 13924 1.186 ! Near Maximum !
IMR 7828 101.5 79.4 5.15 2994 99.8 63000 13924 1.186 ! Near Maximum !
Alliant Reloder-25 102.9 82.4 5.34 2993 100.0 63000 13293 1.196 ! Near Maximum !
Hodgdon H1000 106.3 84.6 5.48 2984 99.9 63000 13617 1.180 ! Near Maximum !
Alliant Reloder-22 97.4 79.2 5.14 2975 100.0 63000 13715 1.202 ! Near Maximum !
Winchester WXR 100.0 79.6 5.16 2974 100.0 63000 13743 1.203 ! Near Maximum !
Norma 217 110.0 87.2 5.65 2972 100.0 57957 14394 1.254 ! Near Maximum !
Hodgdon H870 110.0 91.4 5.93 2971 98.2 57649 15226 1.246 ! Near Maximum !
Vihtavuori 24N41 108.5 93.1 6.03 2965 92.4 63000 14557 1.184 ! Near Maximum !
Alliant Reloder-50 110.0 95.8 6.21 2961 96.3 56880 15825 1.276 ! Near Maximum !
Ramshot Magnum 97.3 85.3 5.53 2956 100.0 63000 13093 1.200 ! Near Maximum !
Alliant Reloder-19 94.7 76.2 4.94 2937 100.0 63000 13110 1.196 ! Near Maximum !
Alliant Reloder-23 99.5 78.3 5.08 2922 100.0 63000 12296 1.215 ! Near Maximum !
Hodgdon H4831 SC 96.0 78.1 5.06 2922 99.4 63000 13098 1.193 ! Near Maximum !
Hodgdon H4831 99.9 78.1 5.06 2922 99.4 63000 13098 1.193 ! Near Maximum !
Ramshot Hunter 90.3 75.1 4.86 2920 100.0 63000 12548 1.204 ! Near Maximum !
Vihtavuori N170 109.1 86.9 5.63 2916 96.3 63000 13685 1.213 ! Near Maximum !
Winchester Supreme 780 93.6 79.4 5.15 2895 100.0 63000 12503 1.203 ! Near Maximum !
Vihtavuori N165 99.9 79.5 5.15 2886 100.0 63000 12224 1.207 ! Near Maximum !
Vihtavuori N160 100.2 77.3 5.01 2880 99.6 63000 12377 1.198 ! Near Maximum !
Accurate 3100 97.6 78.5 5.09 2878 100.0 63000 12048 1.234 ! Near Maximum !
IMR 4831 94.2 72.6 4.71 2875 100.0 63000 11762 1.220 ! Near Maximum !
Hodgdon Hybrid 100V 92.2 71.8 4.65 2847 100.0 63000 11116 1.213 ! Near Maximum !
Hodgdon US 869 110.0 94.3 6.11 2824 90.0 54422 13993 1.278 ! Near Maximum !
Hodgdon 50BMG 110.0 89.9 5.83 2819 85.8 54277 14071 1.278 ! Near Maximum !- Thread starter
- #6
wbymagloader4358
Beginner
- Jul 28, 2015
- 6
- 0
Hello SJB358,
Believe it or not, the most accurate ammunition I have fired out of my gun is the Weatherby 200 grain NP factory ammo. Since this ammo consistently shoots .5 MOA at 200 yards and the terminal performance of a NP bullet is legendary, I was on a mission to try and duplicate it in my hand loads. This now appears to be a lost cause since Weatherby uses a proprietary version of the 200 grain NP (with cannelure) as well as a "super powder" that provides 3060 fps with only 78.8 grains.
That said, my .300 Weatherby Mag likes IMR 7828 as well. I use it to load 180 grain Accubonds and 190 grain Berger VLDs. With both loads, the accuracy is sub MOA at 100 yards. Unfortunately, my initial ladder test with IMR 7828 and the 200 grain NP yielded very poor results. I suspect that the test may been skewed by runout and will give it another try after I get my new Hornady Concentricity tool.
Can you tell me what powder weight your boy uses with IMR 7828?
Believe it or not, the most accurate ammunition I have fired out of my gun is the Weatherby 200 grain NP factory ammo. Since this ammo consistently shoots .5 MOA at 200 yards and the terminal performance of a NP bullet is legendary, I was on a mission to try and duplicate it in my hand loads. This now appears to be a lost cause since Weatherby uses a proprietary version of the 200 grain NP (with cannelure) as well as a "super powder" that provides 3060 fps with only 78.8 grains.
That said, my .300 Weatherby Mag likes IMR 7828 as well. I use it to load 180 grain Accubonds and 190 grain Berger VLDs. With both loads, the accuracy is sub MOA at 100 yards. Unfortunately, my initial ladder test with IMR 7828 and the 200 grain NP yielded very poor results. I suspect that the test may been skewed by runout and will give it another try after I get my new Hornady Concentricity tool.
Can you tell me what powder weight your boy uses with IMR 7828?
truck driver
Ammo Smith
- Mar 11, 2013
- 7,380
- 1,017
If you go to the reloading board and use the search option for 300 Wby loads you should be able to find all the post for 300 Wby loads on this site. I think that's right been a while since I used it.
wbymagloader4358":10c79gem said:
Here is what I came up with.
viewtopic.php?f=4&t=30360
Hope that helps.
- Thread starter
- #11
wbymagloader4358
Beginner
- Jul 28, 2015
- 6
- 0
Thanks again to those who took the time to respond.
