IMR4007SS

[JD338]

Anyone here tried IMR4007SS, specifically in the 300 WSM?
I'm looking for some 300 WSM loads with a 180 gr AB.
Thanks for any feedback.
http://www.imrpowder.com/pdf/IMR%204007 ... 20List.pdf

JD338

 

[FOTIS]

Cartridge : .300 WSM (CIP)
Bullet : .308, 180, Nosler AccuBond 54825
Cartridge O.A.L. L6: 2.860 inch or 72.64 mm
Barrel Length : 24.0 inch or 609.6 mm
Powder : IMR 4007 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 74 48.80 2350 2207 33489 8080 92.2 1.559
-18.0 76 50.02 2405 2312 35619 8315 93.2 1.518
-16.0 78 51.24 2460 2419 37875 8542 94.1 1.475
-14.0 80 52.46 2515 2527 40262 8762 95.0 1.433
-12.0 82 53.68 2569 2638 42791 8973 95.8 1.391
-10.0 84 54.90 2624 2751 45470 9175 96.6 1.352
-08.0 86 56.12 2678 2866 48309 9367 97.2 1.313
-06.0 87 57.34 2732 2982 51318 9548 97.9 1.277
-04.0 89 58.56 2785 3101 54510 9718 98.4 1.241
-02.0 91 59.78 2839 3221 57897 9876 98.8 1.207 ! Near Maximum !
+00.0 93 61.00 2892 3343 61494 10022 99.2 1.175 ! Near Maximum !
+02.0 95 62.22 2945 3466 65317 10154 99.5 1.143 !DANGEROUS LOAD-DO NOT USE!
+04.0 97 63.44 2997 3591 69382 10273 99.8 1.113 !DANGEROUS LOAD-DO NOT USE!
+06.0 99 64.66 3050 3717 73709 10377 99.9 1.083 !DANGEROUS LOAD-DO NOT USE!
+08.0 101 65.88 3102 3845 78321 10466 100.0 1.055 !DANGEROUS LOAD-DO NOT USE!
+10.0 102 67.10 3153 3974 83240 10542 100.0 1.027 !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 93 61.00 3000 3597 71584 9744 100.0 1.099 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 93 61.00 2742 3005 51499 9889 94.9 1.274

 

[JD338]

Thanks Pop.

Is this a good powder choice or do you suggest something else like RL 22?

JD338

 

[DrMike]

JD,

I worked up a load with 180 grain Scirocco's in my 300 WSM. Accuracy was good, but velocity was significantly lower (>200 fps) than what I had observed with other powders, such as WXR (FS) and RL19 (A-frames), H414 (AB), MagPro (Hdy SST) or N560 (Hdy IB).

 

[Antelope_Sniper]

JD, good luck with the 300 WSM. I look forward to seeing your results.
When you are able to get some, I be RL 17 would be very interesting in that gun.

 

[FOTIS]

At 105% compression this is what I got....



Cartridge : .300 WSM (CIP)
Bullet : .308, 180, Nosler AccuBond 54825
Cartridge O.A.L. L6: 2.860 inch or 72.64 mm
Barrel Length : 24.0 inch or 609.6 mm

Predicted Data for Indicated Charges of the Following Powders.

Matching Maximum Pressure: 63500 psi, or 437 MPa

or a maximum loading ratio or filling of 105 %

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 !

127 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
--------------------------------- -----------------------------------------------------------------
Norma MRP 105.0 70.8 4.59 3045 99.5 60218 11833 1.161 ! Near Maximum !
IMR 7828 SSC 105.0 69.7 4.52 3008 97.5 60257 11586 1.152 ! Near Maximum !
ADI AR 2209 104.3 67.0 4.34 3008 98.8 63500 11058 1.132 ! Near Maximum !
Alliant Reloder-19 104.9 67.8 4.39 3008 98.9 63500 11134 1.139 ! Near Maximum !
Hodgdon H4350 100.1 64.3 4.17 3005 100.0 63500 10639 1.138 ! Near Maximum !
Ramshot Hunter 100.4 67.0 4.34 3005 99.9 63500 10807 1.145 ! Near Maximum !
Winchester 760 94.8 64.8 4.20 3001 99.7 63500 10829 1.147 ! Near Maximum !
Somchem S365 102.3 65.8 4.26 2998 100.0 63500 10024 1.152 ! Near Maximum !
Alliant Reloder-17 92.5 62.7 4.06 2994 100.0 63500 10178 1.134 ! Near Maximum !
IMR 4350 102.6 63.5 4.12 2991 99.8 63500 10605 1.143 ! Near Maximum !
Vihtavuori N550 97.1 64.1 4.15 2984 100.0 63500 10472 1.156 ! Near Maximum !
Norma URP 99.9 63.9 4.14 2984 100.0 63500 10335 1.152 ! Near Maximum !
Bofors RP19 ~approximation 100.0 63.9 4.14 2983 100.0 63500 10332 1.152 ! Near Maximum !
Bofors RP14 ~approximation 105.0 67.9 4.40 2982 98.7 62192 11003 1.150 ! Near Maximum !
Norma 204 99.4 66.4 4.30 2981 98.7 63500 10829 1.141 ! Near Maximum !
Raufoss RA4 102.7 66.4 4.30 2981 98.7 63500 10829 1.141 ! Near Maximum !
Bofors RP4 ~approximation 102.7 66.4 4.30 2981 98.7 63500 10829 1.141 ! Near Maximum !
Accurate 4350 103.6 64.1 4.15 2979 100.0 63500 10293 1.168 ! Near Maximum !
Vihtavuori N560 105.0 69.3 4.49 2978 96.5 57024 11831 1.188 ! Near Maximum !
Hodgdon H414 92.4 63.6 4.12 2978 99.7 63500 10666 1.155 ! Near Maximum !
Somchem S385 105.0 68.6 4.44 2967 99.4 63257 10632 1.161 ! Near Maximum !
ADI AR 2213 105.0 68.6 4.44 2965 97.0 58555 11386 1.167 ! Near Maximum !
IMR 4831 104.8 64.9 4.20 2965 100.0 63500 10105 1.161 ! Near Maximum !
Ramshot BigGame 93.3 62.2 4.03 2961 100.0 63500 9960 1.152 ! Near Maximum !
SNPE Vectan SP 11 93.4 62.3 4.04 2960 100.0 63500 9946 1.152 ! Near Maximum !

 

[JD338]

JD, good luck with the 300 WSM. I look forward to seeing your results.
When you are able to get some, I be RL 17 would be very interesting in that gun.

This is a spring project for a friend.
Thanks for the G2, I'll keep you fellas posted.

JD338

 

[Wally]

JD,

I used RL22 in my Dad's 300 WSM with 180 Accubonds. I got my info from the Nosler Manual. The loads shot very well.

Steve

 

[JD338]

Wally

Thanks for your input. My first choice would be RL 22, I was curious to hear about IMR4007SS. What rifle does your Dad have?

JD338

 

[FOTIS]

Cartridge : .300 WSM (CIP)
Bullet : .308, 180, Nosler AccuBond 54825
Cartridge O.A.L. L6: 2.860 inch or 72.64 mm
Barrel Length : 24.0 inch or 609.6 mm
Powder : Alliant Reloder-22

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% 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

-10.0 98 63.90 2736 2992 44524 10705 95.3 1.336
-09.0 99 64.61 2768 3063 46139 10829 95.8 1.314
-08.0 100 65.32 2801 3136 47811 10948 96.3 1.293
-07.0 101 66.03 2834 3210 49554 11063 96.8 1.271
-06.0 102 66.74 2867 3284 51367 11173 97.2 1.251
-05.0 103 67.45 2899 3360 53251 11278 97.6 1.231
-04.0 104 68.16 2932 3436 55215 11378 97.9 1.210 ! Near Maximum !
-03.0 105 68.87 2965 3513 57261 11473 98.3 1.191 ! Near Maximum !
-02.0 106 69.58 2997 3591 59391 11562 98.6 1.172 ! Near Maximum !
-01.0 108 70.29 3030 3670 61611 11645 98.8 1.153 ! Near Maximum !
+00.0 109 71.00 3063 3749 63928 11723 99.1 1.134 !DANGEROUS LOAD-DO NOT USE!
+01.0 110 71.71 3095 3829 66344 11794 99.3 1.116 !DANGEROUS LOAD-DO NOT USE!
+02.0 111 72.42 3128 3910 68860 11860 99.5 1.098 !DANGEROUS LOAD-DO NOT USE!
+03.0 112 73.13 3160 3992 71474 11919 99.6 1.080 !DANGEROUS LOAD-DO NOT USE!
+04.0 113 73.84 3193 4074 74194 11972 99.8 1.063 !DANGEROUS LOAD-DO NOT USE!
+05.0 114 74.55 3225 4158 77032 12018 99.9 1.046 !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 71.00 3207 4112 78297 11316 100.0 1.046 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 109 71.00 2859 3267 50924 11468 93.4 1.250

 

[Wally]

JD,
The rifle we have ALREADY tried the RL22 in was a Savage. He likes the cartridge so much, he recently bought a Kimber 300 WSM. We plan on trying the same powder/bullet combination in the Kimber, since it worked so well in the Savage.

Steve